According to the process decision, the Newhb fire shutter doors should be installed in addition to the firewall, and fire shutters should also be installed if there is no firewall between the two fire compartments, generally in the following positions.
(1) Enclose the evacuation stairs and lead to the aisle; close the elevator room and lead to the front room and the door of the front room leading to the aisle.
(2) Inspection doors for vertical pipeline wells such as cable wells, pipeline wells, flue gas ducts, garbage ducts, etc.
(3) Divide fire compartments and control the fire walls and doors on fire partitions in the building area of ??the compartments. When it is difficult to install a fire wall or fire door in a building, it should be replaced by a fire shutter door, and at the same time, it must be protected by a water curtain.
(4) Specifications (such as GB50045-95 “Code for Fire Protection Design of High-Rise Civil Buildings”) or design requirements for fire and smoke partition doors. For example: equipment rooms with fixed fire extinguishing devices (cylinder rooms, foam stations, etc.) attached to high-rise civil buildings, partition doors for ventilation and air conditioning equipment rooms, etc. should be Class A fire doors; The door on the partition wall of the basement room should be a Class A fire door; due to conditions, it is necessary to arrange fuel and gas boilers, fuel oil and oil immersed power transformers, high voltage capacitors and switches filled with fuel oil in high-rise buildings, etc. The doors on the partition walls of the dedicated rooms shall be Class A fire doors. There are also household doors that require fire protection with other requirements, such as household doors in the fire monitoring and command center, archives and warehouses, etc., usually Class A or Class B fire doors are used. Fire-proof and anti-theft doors are often used for household division doors in high-rise residential buildings.
Under normal circumstances, large buildings are equipped with a central fire control system. When a fire occurs, the smoke sensor (smoke sensor for short) installed on the roof first receives a smoke signal and at the same time alarms the central control system. The fire shutters in the area go down at a certain speed. When the roller blind descends to a position about 1.8 meters above the ground, stop descending to facilitate the evacuation and evacuation of personnel. After the fire shutter door stays in the middle for a certain period of time, it will continue to descend until it is closed. The descending speed and intermediate residence time of the fire shutter door can be adjusted during installation.
In some occasions, the building is not equipped with a central fire control system, and the fire-resistant rolling door only uses the fire control electrical box of the fire-resistant rolling door to realize the fire-proof operation procedure of the fire-resistant rolling door. In this case, when a fire alarm occurs, the fire alarm signal received by the smoke sensor is directly transmitted to the fire control electrical box of the fire shutter door.
In the event of a power failure, the fire shutter door can only be lowered by pulling the iron chain. The fireproof rolling shutter door is equipped with manual operation, which can only be lowered in one direction and cannot be lifted.
The production requirements of fireproof rolling shutter doors are relatively high, that is, the entire system is required to withstand a high temperature test of about 1100° for a certain period of time. The fire resistance time of fireproof rolling shutter doors is the main indicator of fireproof rolling shutter doors. The GB14102-93 steel fire-resistant rolling door general technical conditions stipulate four fire-resistant grades for the fire-resistant time.
Newhb has been engaged in the special rolling door industry for 20 years and has won the Hong Kong Access Certificate and European Standard Fire Protection Certification, ensuring that the steel fireproof rolling door can be insulated for four hours. Adhering to the business belief of “one heart, one door”, we are determined to provide the public with more superior security products.
Post time: Sep-14-2021