Fire safety work is the top priority of the tobacco industry. According to GB50016-2006 "building design for fire protection," the standards, tobacco manufacturers in the construction, reconstruction, expansion, joint production workshops, building structure, the design than the previous standard factory space, interior headroom,glue stick the area of a single fire district greatly increased, which makes the fire alarm system is facing new challenges.
In recent years, with the scientific and technological progress and rapid development of the tobacco industry, a number of advanced security facilities in the tobacco industry has been more widely used, air sampling fire alarm system (hereinafter referred to as "air sample") is one which It can greatly improve the ability of fire early warning, even in the aluminum phosphide pesticide period, the system can still function properly,glue gun and be able to measure the degree of insecticidal essential drugs. I smoke alarm system for air sampling applications in the preliminary practice of the tobacco industry are described.
Fire alarm detection system is currently used smoke point, point-temperature, cable-type temperature, laser-wire smoke and other traditional methods, these alarm systems are set to the detection unit to protect the region, using a wire and alarm host is connected, while protecting the region smoke, heat and other physical and chemical changes in information is reached by natural convection of air sensors, and passive detection. As Gas Cooling suspension, air convection and air conditioning and ventilation and other causes dilution of the smoke, the traditional fire alarm equipment in great depth, large industrial production environment clearance on the effectiveness of fire alarms, timeliness, reliability, greatly reduced.
Air sampling system is the market in recent years, a new type of fire alarm detection equipment, different from the traditional passive detection methods, it takes a proactive way to detect, the main working principle is to use the built-in air pump inside the machine, using laid in protected areas sampling tube, the larger the scope of the protection of the region's air intake area, the bus to the air sampling focused on the optical probe within the cavity of the host, after the detection of the smoke concentration field, sent to the remote computer for real-time display of smoke concentration curve, providing early warning fire alarm. Air sampling system applications in the telecommunications industry earlier, in recent years started projects in the industrial production application, especially in some of the new cigarette manufacturers, many parts of the construction of the plant are designed with this type of fire alarm detection system.
New construction, renovation of the cigarette manufacturers under the "architectural design code for fire protection" provisions of the main plant, cigarette production process requirements under the fire district was relatively large, a single fire district more than 10,000 m2 of factory buildings are common.
Air sampling system to monitor each alarm host 2000 ~ 4000m2 general scope of protection. According to the principle of its work and the current understanding of the more popular in the sampling tube holes on the protected area of each sample equivalent to the traditional single-point alarm fire alarm equipment, protected area, but because of the air sampling system for each detector unit (smoke optical analysis cavity) is used as an alarm address, so the detection unit in the sampling tube connected to all the dozens of fires reported in the sampling holes are the same address, similar to the conventional fire alarm system connected to dozens of under coding module non-coded alarm sensor alarm mode, the air sampling detection unit for each protected area should be treated as an alarm. Several air sampling in accordance with the current design manual and design requirements, each air sampling detection alarm device for a maximum protection unit area of about 2000m2, taking into account the higher cost air sampling system, the system is not suitable for a single regional area than small office and other places, on the great depth, place relatively large space for, especially the new cigarette processing enterprises, the fire district large indoor high clearance for fire alarm design and installation of air sampling system.
Active exhaust alarm sensitivity.
Air sampling system uses a built-in pump, through the protected area of the gas pipeline will be taken to the analysis unit for analysis, and traditional point-type fire alarm systems, are active.