【 Weak current College 】 oil depot fire security automatic control and alarm system design---Power By 【 China power house network 】

Crude oil into refined oil, library and library use crude float type tank, finished oil use vault and internal floating roof-tank. Select the appropriate fire detectors to detect fire the main characteristics of the early is important. We all know, the combustion is accompanied by light and heat of reaction processes, crude and refined oil in combustion is the most significant features of the early release of energy that the ambient temperature rises, so the main oil depot fire signal detection using temperature detection as a fire detection object.
　　
At present, the main application has the following 3 types of temperature probes (1) linear heat detector, known as temperature sensor cable; (2) point-fixed temperature type detector; (3) thermal fusible-nitrogen gas detection system. The above three thermal detectors is to detect the temperature setting as a fire signal. Once thermal detectors installed at the temperature reaches the set value, thermal detectors to control system sending a digital fire signal, automatic fire alarm control system signal processing on fire, issue a sound and light alarm, the delay time starts after the confirmation, the fire extinguishing system for fire fighting. Another fire detectors have infrared-ultraviolet combined flame detector and the concentration of combustible gas detector type. Design according to the specific project and use environment to determine its type detector or a combination.
　　
At present the main use of Daqing Oilfield oil temperature sensor cable and point-fixed temperature-detector. Early in the depot 10 × 104m3 tank fire design, is nitrogen thermal fusible-detection system. Temperature sensor cable and point-fixed temperature type detector installation maintenance simpler, now widely used.
　　
Automatic fire alarm control system
　　
Automatic fire alarm control system consists of fire alarm controller and simulation Control Panel. Design fire detector should be and the same production factory of the product or have a good matching of automatic fire alarm control system to ensure that fire detection signal and systems of transmission accurate reliable. The system generally use computer intelligent technology, according to the fire alarm and fire extinguishing control program to prepare fire control application software, complete fire signal processing, analog display and alarm, control and diagnostic functions. Automatic fire alarm control system power requirements: AC mains power supply for fire, the standby power supply for DC power supply (24V, 3.510.0AH).
　　
Automatic spray cooling and foam extinguishing systems
　　
Spray cooling and foam fire extinguishing system consists of fire pumps, cooling water pumps, foam liquid storage tanks, foam generators, pressure proportioner, water control valve and foam control valve. Control valve should use a dedicated control valves and fire protection should be designed to fire-fighting water pressure control instrument, liquid level detection instruments and fire water system startup instrumentation, etc. Control system for detection of their status at any time, make sure that the system is always on standby.
　　
Industrial television system
　　
Due to the continued development of oilfield construction, increasing the size of the depot, only by managers ensure oil security can not meet the modern requirements of enterprise safety in production management. In recent years the Daqing Depot design industrial television system, can be realized on Depot important production facilities for monitoring, to find that the fire in the early days of smoke and flame and other phenomena
In order to take effective measures in a timely manner. In the system under fire status can be monitored and video, TV monitor system and automatic fire alarm control system as well as stationary fire systems constitute a complete set of automatic fire fighting system. TV monitoring system mainly includes: outdoor front-end equipment, indoor front-end device, system, matrix, color monitor and camera parts. Outdoor front-end device is installed in the tall towers (4050m) 24/7 color night vision camera, main monitor area, its scan RADIUS up to 1km. Indoor front-end device setting several sets of explosion-proof color camera, main monitor oil pump room and metering.
　　
Fire protection system design principles
Each tank has its own characteristics, fire security automatic control system design should vary depending on the project
。 It is necessary to meet the user's current investment requirements, but also to guarantee the long-term benefit of end users. System design has three.
　　
(1) automatic fire detection and alarm. Only the design of fire detection and alarm system, the system detects a fire signal
For sound and light alarm and simulation control panel indicating the location of the fire signal generation and the nature of the duty to verify the scene quickly, take effective measures.
　　
(2) the fire automatic fire detection and alarm artificial confirmation. Design of fire detection and alarm system, spray cooling and foam fire extinguishing system, the system detects a fire signal when a sound and light alarm, and simulation control panel indicating the location of the fire signal generation, on-duty staff confirmed that initiate an automatic spray cooling and foam extinguishing systems, automatic fire suppression. This reduces accidental actions to avoid loss of water and foam fire.
　　
(3) fire automatic alarm fire control programmes. In fire detection system, designed to test multiple parameters. Under fire signal, automatic start different fire extinguishing system. If the system detects a fire signal, automatic start spraying cooling and foam extinguishing systems; system detects temperature signal, just start spraying and cooling system; system detects flammable gas concentration alarm signal, only sound and light alarm.