【 Weak current College 】 fire shutter's classification and scope of use

Fire shutter as with firewall role played bounding horizontal zones separated by curtains Board, plank, guides, bearings, spool, Cabinet, control box, shutter, restrictor, doorway, manual speed drop switchgear, button switch and device, such as the 13-part, common installation in the inconvenience of parts, separated by a firewall. Example: open the elevator, escalator, Department store of the spacious hall, exhibition floor exhibition halls and buildings of the cave is large and cannot be used for fire doors and Windows. Fire shutter in architectural engineering, the fireproofing won the broad application.
Fire shutter classification:

Press material: steel, composite, inorganic, etc.

According to the installation form: wall, wall-side (or hole, the hole).

The opening direction can be divided into: roll and side volume two.

Fire shutter fire performance rating, there is no national standard, GB14102 the steel fire shutter General technical conditions "in the ordinary steel fire shutter is divided into:

Level 1, fire resistance time 1.50h

F2-level, fire resistance time 2.0h

Composite steel fire shutter is divided into:

F3-level, fire resistance time 2.50h

F4-level, fire resistance time 3.00h

But GB GB14102 on steel fire shutter fire resistance performance ratings are not requirements for fire resistance test for measuring back fire surface temperature, do not take back fire surface temperature rise time as the judgment of fire, in recent years the market VAP-steel fire shutter, evaporative VAP-steel fire shutter, and so on, press the "explanation", when used as a fire retardant partition separates artifacts, you must take back fire surface temperature rise as fire resistance of the judging criteria. To distinguish between these two different conditions of fire resistance of fire shutter of classification, in fire shutter grading standards introduced previously, the doctrine of "management of experts recommended: according to the national standard of the door and curtain of fire test methods for fire resistance test, GB7633 reach including back fire surface temperature rise in various conditions, the fire resistance ¡ý 3.0h, called Super fire shutter, all in fire resistance test of not taking back fire surface temperature rise as judging criteria collectively referred to as ordinary fire shutter.

Fire shutter General where to set?

Basis technology decisions, fire shutter in addition to the settings in the firewall, in between the two fire partitions without firewall also fire shutter should be set. Usually located in the following areas.

(1) closed staircases, leads to the sidewalk; closed elevator, pass forward room and room leads to the sidewalk in front of the door.

(2) cable and pipe wells, exhaust, trash and other vertical pipe wells inspection door.

(3) fire partition, partitioning construction area of the firewall and fire wall on the door. When building Setup firewall or fire doors are in difficulties, to use fire shutter curtain replacement, at the same time be secure.

(4) specification (such as GB50045-95 tall buildings design fire protection standard ") or the special requirements of fire safety design, smoke partitions household door. For example: tall buildings with the fixed fire-extinguishing apparatus equipment room (steel cylinder Chamber, foam station, etc.), ventilation, air conditioning in rooms, partition doors should be grade-a fire door; often people stay or fuel more basement room partition on the door, class a fire door should be used; as a result of an act which must be arranged in high-rise building in boiler fuel, gas, fuel oil-immersed power transformer, charger has to fuel high voltage capacitor and switches, etc, private rooms, partition, the door should use class a fire door.

There are special requirements for design shall be the household of fire doors, such as fire control command centers, archives, library, warehouse, and other valuables of the household, usually choose category a or category b fire doors. High-rise residential building of household door, fireproof door is often used.

Mainly used for large supermarket (hypermarket), large shopping malls, large specialty materials market, large halls, workshops, warehouses and other public places where fire requirements. When a fire, fire shutter in fire central control system control, at a pre-determined procedures automatically drop (downlink) and thus prevent flames spread to other areas, in order to implement the fire fight for valuable time.

In General, large-scale construction according to the national fire Act configuration fire central control system. When a fire occurs, installed on the roof of the House of smoke sensor (smoke) first received the smoke signals to the central control system alarm at the periphery and fire alarm central control system by identifying, plug in the fire region fire shutter power so that the fire region fire shutter press certain speed downlink. When the shutter down to about 1.5 m above the ground position, stop down, to the benefit of personnel of evacuation and evacuation. Fire shutter in the middle of the stay after a certain period of time, and then continue down until close. Fire shutter of downlink speed and intermediate residence time can be adjusted during installation.

In some occasions, the building is not equipped with fire central control system, fire shutter only with the help of fire shutter fire control electrical box achieve fire shutter of fire safety requirements to run the program. In this case, when a fire, smoke sensor receives the fire signals direct to fire shutter fire control electrical box.

In case of power failure, only by pulling reintroduction of fire shutter down. Fireproof roller doors equipped with manual, only one-way drop, cannot be raised.

Fire shutter production requirements are higher, which requires that the entire system can withstand some time around high temperature of 1100 °, fire shutter fire resistance time is fire shutter key indicators. GB14102-93 steel fire shutter General technical requirements for fire resistance time provides four fireproof grade.

Fire shutter in the course of action details

Steel fire shutter is publicTotal space fire partitions and important fire fire Panel. It is the mechanical and electrical properties of fire protection products and, therefore, to install good fire curtain should always in a normal state. Steel fire shutter during use, the equipment should have special use and custody of, and has a basic knowledge of electrical and mechanical.

In operation, the operator will be allowed to leave the operation place, should pay close attention to the situation and implementation of the open and close, and close the shutter when not allowed someone to stand, below. To prevent limit switch failure, curtain stuck, the motor is blocked and other accidents. Fire prevention and fire Panel of steel fire shutter usually does not make frequent use, once the region fires, shutter should be effectively put into use. With linkage control, central control center control for automatic control of fire shutter must be based on a set of control instruction program.

In the use process once found exception should immediately take urgent measures to cut off the input power, troubleshooting. Fire curtain should establish a regular maintenance of the system, and each is worth mentioning is the maintenance records of the shutter, record archive. Long-term and close the shutter half year must be maintained once content now to eliminate dust, brushing paint, part of the driving sprocket wheel roller chain lubricating biography, etc. Check the electrical wiring and electrical equipment is damaged, work correctly, can comply with the directive, where there is damage and does not meet the requirements should be immediately for inspection.

Fire shutter installation requirements and instructions for use

1. install the entrance to the upper roller doors fitted air duct, pipe, etc.;

2, power line (three-phase five-wire and fire control signal lines) laying by the user to shutter electrical control box next to the side;

3. roller doors installed, install ceiling, ceiling plate should be off the edge of the curtain to prevent friction; 50MM

4, debugging, and use the bottom station is strictly forbidden.

Removal of electrical facilities will be allowed to move;

5. administrative provisions under fire, fire shutter to fire special facilities, shall not be repurposed, shutter not just below the dumps any article;

6, installation, launch once per quarter, to check the electrical, mechanical properties, check that the safety of operations.