Smoke retaining vertical wall control system

  Smoke retaining vertical wall
Fixed or movable smoke blocking facilities made of non combustible materials and hanging not less than 500 mm from the ceiling
Movable smoke retaining wall refers to the smoke retaining wall that automatically sags due to the action of temperature, smoke or other control equipment in case of fire
It is mainly used in high-rise or super high-rise large shopping malls, office buildings, warehouses and other occasions
It can effectively block the transverse flow of smoke under the building ceiling, so as to improve the smoke exhaust effect in the smoke control zone and play a positive role in ensuring the safety of people's lives and property

Main technical performance requirements
1) Appearance
(1) The signboard of smoke retaining vertical wall shall be firm and the identification shall be clear

(2) The surface of metal parts of smoke retaining vertical wall shall be free of cracks, pressure pits, obvious concave convex, hammer marks, burrs, holes and other defects; The surface must be treated with rust prevention, and the coating and coating shall be uniform without spots, peeling and flowing

(3) The smoke retaining parts of the rolling shutter smoke retaining vertical wall are not allowed to have defects such as tearing, missing angle, patching, hole breaking, inclination, jumper, broken thread, obvious uneven warp and weft yarn density and color difference; The surface shall be straight, tidy and beautiful

(4) No dislocation is allowed at the assembly and splicing of all parts

2) Materials and parts
(1) Various raw materials used for smoke retaining vertical wall must comply with the provisions of corresponding national standards or industrial standards

(2) The motor and control box (including button box) used for smoke retaining vertical wall shall be qualified products inspected by national testing institutions

(3) The smoke leakage of smoke retaining components of smoke retaining vertical wall at (200 & plusmn; 15) ℃, (25 & plusmn; 5) Pa differential pressure shall not be greater than 25m / (M & middot; H)

(4) If the rolling shutter smoke retaining vertical wall smoke retaining parts are sewn by two or more fabrics, the overlapping width shall not be less than 20mm

(5) When the width of single section smoke retaining vertical wall cannot meet the requirements of smoke prevention zoning, multiple sections of vertical wall can be installed and used in the form of overlapping, and the overlapping width shall meet the following requirements:
a) The vertical wall of rolling shutter smoke retaining shall not be less than 100mm;
b) The vertical wall of flap type smoke retaining shall not be less than 20mm

(6) A small distance shall be kept between the edge of smoke retaining vertical wall and the surface of building structure, and the distance shall not be greater than 60mm

(7) The roller shutter smoke retaining vertical wall must be equipped with a bottom beam with sufficient weight to ensure the smooth and stable operation of the vertical wall

3) Control mode
(1) The smoke retaining vertical wall shall be linked with the smoke detector
When the smoke detector gives an alarm, the smoke retaining vertical wall can automatically fall to the smoke retaining working position

(2) After receiving the control signal from the fire control center, the smoke retaining vertical wall shall be able to descend to the smoke retaining working position

(3) When the system is powered off, the smoke retaining vertical wall can automatically fall to the smoke retaining working position

4) Operational performance
(1) The running speed of electric descent or mechanical descent of roller shutter smoke retaining vertical wall shall be ≥ 0
07m/s。 The operation time of electric descent or mechanical descent of flap smoke retaining vertical wall shall be & lt; 7s。
(2) The smoke retaining vertical wall shall be equipped with a limit device, which can automatically stop when it runs to the upper and lower limits

5) Reliability
(1) After 1000 opening and closing operations, the smoke retaining vertical wall shall be able to operate normally
A probe with a diameter of (6 & plusmn; 0
1) mm or a test block with a length of (15 & plusmn; 0
1) mm and a width of (24 & plusmn; 0
1) mm cannot pass through the smoke retaining part of the smoke retaining vertical wall

6) Wind swing resistance
When the smoke retaining vertical wall bears the wind speed of (5 & plusmn; 1) m / s, its vertical deflection angle shall not be greater than 15 & deg;

7) High temperature resistance
The smoke retaining vertical wall shall be maintained at (620 & plusmn; 20) ÷ degree for 30min, and its integrity shall not be damaged