The natural enemy of the engine room can be said to be dust, even worse, the fire in the engine room is also inseparable from it. Once the fire in the engine room occurs, the losses are as low as hundreds of thousands or even hundreds of millions.
Reasons for the fire in the engine room
UPS battery is on fire
After the battery caught fire, smoke stains quickly spread throughout the room ( Strictly speaking, the UPS battery could not be connected to the equipment in the equipment room, but many units were put together due to funding and space constraints ) . Even if it was not in a computer room, the channel was connected. Smoke stains will quickly occupy the engine room.
Excessive load
When the equipment in the equipment room cannot meet the requirements of users, it is easy to add equipment in the equipment room. However, the load of the cables is not easily modified. This results in heavy load on the cables and fire caused by overheating.
Dust from equipment, not cleaned
Due to the long-term operation of the equipment, coupled with the harsh environment, dust, oil, etc., are not cleared in time, causing short-circuit and high-temperature alarms of the equipment. It is easy to cause fire.
Old equipment is not replaced in time
In particular, the cable is operated under high load for a long time. If the cable is not replaced and cleaned in time, it is easy to melt the cable insulation layer at high temperatures and cause fire.
Fire emergency plan
1 , quickly cut off the power supply room.
2 , fire alarm.
3 , start the engine room fire extinguishing device ( except the automatic start mode ) .
4. Fire extinguishers are fired on the premise of safety before the arrival of firefighters, and other unrelated personnel are quickly evacuated.
Computer room fire protection system
The fire protection system is an essential guarantee for the engine room. The fire protection in the engine room must use non-corrosive gas automatic fire extinguishing devices. The extinguishing performance of the gas fire extinguishing device is reliable and does not damage the electronic equipment and the dark pipe cloth installation does not affect the overall effect of the machine room.
(I) Design of Automatic Fire Alarm System - Analysis of Engine Room Structure and Fire Prevention
1. The spatial structure in the engine room is divided into three layers: under the floor, under the ceiling, and between the floor ceilings.
2. The fire factors in the general equipment room are mainly caused by electrical overload or short circuit. The main area of ​​combustion is generally under the floor or under the ceiling. Smoke is emitted at the initial stage of combustion, and the temperature rise is relatively slow.
(B) Fire Alarm System Design - Fire Detector Location Design
1. Two kinds of smoke detectors with different sensitivities are installed under the floor and under the ceiling, and two different sensitivity detectors are set within the unit detection area of ​​a smoke detector.
2, an installation floor smoke detector, a temperature detector; mounted on a ceiling smoke detector, a temperature detector.
(III) Design of Fire Protection Linkage System
1. When the three-phase alarm, two-way alarm and gas discharge occurs in the engine room, the action signal should be reflected in the fire control room of the building so that the building can be managed in a unified manner.
2 , in the case of incompatible with the original alarm equipment of the building, to achieve the transmission of three states, there are two programs can be achieved, one is through the building's weak electric wells to the building fire control room, and installed in the control room Corresponding status display screen, this method can realize the status of various operating points in the engine room, but in the case of a large number of fire extinguishing rooms in the building, the weak electric wells in the building may not be able to accommodate more pipelines;
The other type is the alarm fire extinguishing controller in the equipment room. The status signal that needs to be sent passes through the passive contact of the control module and is sent to the input module of the existing alarm system near the building (in addition ) . The newly added input module of the alarm system can be reprogrammed. This method can eliminate the need to re-arrange the pipeline.
3 , non-fire power and linkage with the building's alarm system linkage, air-conditioning system and non-fire power off, should be in the gas before the release of 30S action, that is, the alarm controller received two alarm signals after the closure of the air conditioner Machines, fire dampers in fire-fighting areas and signals from non-fire fighting power sources.
(four) fire extinguishing system design
1. According to the particularity of the engine room, this system uses a gas fire extinguishing system, and according to the gas extinguishing requirements, designs other auxiliary electrical equipment required by the system.
2. Set a gas emergency start and stop button and install it on the outer wall of the fire extinguishing area.
3. Set up two sound and light alarms to set the gas discharge indicator, which is installed in the fire extinguishing area and one outside each.
4. Set a gas discharge indicator. The gas discharge indicator is controlled by the return signal after the fire extinguishing controller is connected to the pressure switch on the gas pipeline. Other alarm system equipment such as manual alarm buttons, fire alarms, etc., should be set in accordance with the fire code.
(five) gas fire extinguishing system
1 , the choice of gas type fire extinguishing system, according to the size of the engine room to set the size of the cylinder, the system's storage pressure using 2.5Mpa . It can ensure that most of the gas in the cylinder can be evenly sprayed into the fire extinguishing area.
2. The area between the cylinders can be smaller. In addition, the design must take into account the bearing capacity between the cylinders. Generally, the building has a load-bearing capacity of 600kg /m2 and a maximum of 1,000kg /m2 . When a large-capacity fire-fighting cylinder is selected, the load-bearing weight of the floor slab is more than 1000kg /m2 . When designing a fire extinguishing system, the weight and floor space of the full cylinder must be specifically stated so that when the structural designer designs the structure, it is necessary to take reinforcement measures for the cylinders to ensure the safety of the building.
(6) Protection requirements for gas fire extinguishing area
1 , through the fire extinguishing area air conditioning pipeline, installed on both sides of electric fire damper.
2. For underground air-conditioning systems with no pipeline under the air supply, install electric fire dampers under the walls of the fire extinguishing area. The fire dampers are normally open to ensure the amount of air-conditioning air supply in the machine room. When the fire is extinguished, all are closed to ensure the fire-extinguishing area. The agent does not leak out.
3. Doors installed in the area of ​​the fire extinguishing system must all be opened outward and door closers should be installed.
The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.
New design ceiling fan,ceiling fan with light,decorative ceiling fan
JIANGMEN ESCLIGHTING TECHNOLOGY LIMITED , https://www.jmwindfansummer.com