发布人：http://www.kdjlm.com 发布时间：2020-02-18 11:11:20
In recent years, steel fire-proof electric roller shutter has been widely used, and we all know that roller shutter can well prevent the spread of fire. How does steel roller shutter work in the process of use? Let's learn about it together with the peak door industry.
In case of fire, the rolling shutter will be automatically lowered (down) according to the preset procedure under the control of the fire central control system, so as to prevent the flame from spreading to other areas and strive for valuable time for the implementation of fire fighting.
When a fire occurs, the smoke sensor installed on the roof (referred to as smoke sensor) receives the smoke signal first and gives an alarm to the central control system at the same time. After identification, the central control system of fire protection connects the power supply of the fire shutter door in the fire area, so that the fire shutter in the fire area can go down at a certain speed. When the roller shutter descends to a position about 1.5m from the ground, stop descending to facilitate the evacuation and evacuation of personnel. After the fire shutter door stays in the middle for a certain time, it can continue to descend until it is closed.
The down speed and intermediate dwell time of steel fire-proof electric rolling shutter door can be adjusted during installation.
In some cases, the building is not equipped with a fire central control system, and the fire rolling shutter door only uses the fire control electric box of the fire rolling shutter door to realize the fire protection regulation operation procedure of the fire rolling shutter door. In this case, when a fire occurs, the fire signal received by the smoke sensor is directly transmitted to the fire control electric box of the fire shutter door.
In case of power failure, the fire shutter door can only be lowered by pulling the chain. The fire shutter door is equipped with manual operation, which can only be put down in one direction and cannot be lifted.
Whether the fire shutter can effectively prevent the spread of fire there are many places to apply the fire shutter, we should be worried about a problem, is it in the end regardless of use? Let's introduce:
Fire shutter is an important fire-fighting equipment in public places. It is a fire-fighting product with inductive function of machinery and electrical appliances, so the installed fire shutter should always be in normal condition. In the process of using the fire shutter, the special equipment shall be used and kept by special personnel, and have certain basic knowledge of electrical engineering and machinery.
During the operation, the operator shall not leave the operation address without permission, and shall pay close attention to the opening and closing conditions and execution conditions. During the opening and closing, no one is allowed to stand or walk under the roller shutter. In order to avoid the failure of the travel switch, the shutter stuck, the motor blocked and other incidents. The steel fire shutter of fire compartment and fire compartment is usually not used frequently. In case of fire in the area, the shutter shall be put into use effectively. It is necessary to carry out automatic control fire shutter with linkage control and central control center control according to a set of control instruction program.
Steel fire-proof electric rolling shutter door is more and more used in people's life. It effectively helps people prevent the occurrence and spread of fire. Do you know what the qualified products of fire-proof rolling shutter are? Here we introduce five related inspection methods:
According to the appearance inspection, the high-quality fire shutter shall be firmly welded and the welding points shall be evenly distributed; the external surface shall be painted flat and smooth; there shall be product mark, quality inspection mark and quality certification (APPROVAL) mark at the specified position.
For figures, the overall dimension of qualified products shall be less than or equal to the overall dimension in the sample description, the door leaf thickness shall be greater than or equal to the door leaf thickness in the sample description, the door frame side wall width shall be greater than or equal to the door frame side wall width in the sample description, the external dimension of fire-proof glass shall be less than or equal to the external dimension of fire-proof glass in the sample description, and the fire-proof glass thickness shall be greater than or equal to the sample description Thickness of fireproof glass in.
Look at the sealing strip, the qualified steel and wood fire doors shall be provided with fire sealing strip, which shall be straight and free of arching, and shall have the qualified test report issued by the national testing agency.
According to the weight estimation, the fire doors with qualified quality are generally heavier, while those with light weight must be of poor quality.
Check the certificate, the steel fire-proof electric rolling shutter door is a product incorporated into the type approval system, and the product needs to be type inspected before sale. The general type inspection report describes the specification, size, composition, material and product photos of the sample in detail. When actually purchasing, the type inspection report shall be obtained from the manufacturer.