The fire alarm system of Anqing's refining and chemical integration project adopts a non-cascaded, peer-to-peer, non-master-slave, peer-to-peer, ring network architecture and a token-non-conflicting network protocol. As the fire alarm controller of the network node configures the optical fiber interface, and each controller uses a single-mode optical fiber cable. Set up the graphic workstation in the joint defense control center to display and control all fire alarms, fire equipment failures and system time synchronization in the area.
The system consists of information management, fire detection, accident warning, linkage control and other subsystems, including 119 telephone alarm and fire alarm police command system, intelligent automatic fire alarm system, fire information management system, geographic information system, analog display screen, etc. . Installation of photo-electric smoke detectors, intelligent high-sensitivity laser smoke detectors, addressed or non-addressed manual alarm buttons, fire alarms, and audible and visual alarms in various regions. Installation of explosion-proof flame detectors in key areas. Recoverable linear temperature-sensing (temperature measuring) detectors are installed at cable bridges, cable trenches, etc. Water spray, fire monitor and gas fire extinguishing controllers are installed in special fire protection areas and devices to achieve intelligent fire alarm and fire control linkage control.
Information Management System
1, the alarm by the police command system telephone alarm by the police command system consists of telephone information processing systems, digital audio recording system. The system automatically performs alarm call queuing, fire telephone call acceptance and identification, dispatching command sending, 119/counting alarm statistics, and 8 digital recording recordings, etc. Alarms are handled by alarm events. Using prepared firefighting plans, issued dispatch instructions to start warning lights in front of alarm, radio, and fire parking spaces.
2. Fire Information Management System The fire information management system records and displays the current fire location and alarm time, as well as the fire category, fire level, incendiary matter, weather and other relevant information according to the alarm location. The system displays the alarm information on the fire alarm simulation display screen while receiving the fire alarm automatic alarm, fire alarm telephone, 119 telephone queuing alarm or fire alarm auto alarm system failure. The system records and archives the data of the entire process of fire alarms in real time.
Fire alarm controller
The main control device of the system is a high-performance large-scale intelligent fire automatic alarm controller with a 32-bit microprocessor. It uses single-mode fiber access to the NFN (NOTIFIER Network) network to form a combination of centralized and decentralized alarm control fire alarm control. system. It adopts a modular structure and consists of a central processing unit, an intelligent control module, a fault isolation module, a monitoring module, and a safety barrier. The LCD display shows alarm information such as the type of fire alarm, alarm device, time, and location of the fire alarm. And can report abnormalities (demolition, disconnection, faults) of various devices to the control center display.
It uses multiple combinations of logic principles to comprehensively evaluate the alarm signals of multiple detectors and improve the reliability of detection and diagnosis. The power supply system uses automatic switching between the main and standby power supplies. The "affair control program" is stored in its non-volatile programmable memory. Once the system detects a fire alarm, it can automatically execute the specified program.
1. Monitoring module The monitoring module (FMM-1) installed in the module box monitors the status of the fire fighting equipment such as the fire alarm button, water flow indicator, and pressure switch, and transmits it to the fire alarm according to the status of monitoring or alarm. Controller. The module has the functions of automatic control recognition, line open circuit or short circuit monitoring, and a decimal code switch. When the monitoring module receives the fire-fighting equipment switching quantity closing signal, it transmits the signal to the controller through the bus, and the controller will send an acousto-optic alarm signal to display the working status of the specific part and the linkage equipment.
2. The intelligent detector of the interface module occupies an independent address on the bus and cannot parallel the common detector. Large detectors such as corridors and halls need to be installed with common detectors in parallel and connected via the interface module (FZM-1). It occupies an address in the bus and can connect up to 25 common detectors.
3. Fault Isolation Module The fault isolator module (ISO-X) automatically isolates the short circuit between the conductors in the SLC loop, limiting the number of detectors affected by the fault. When the fault is removed, the isolated part of the SLC circuit is automatically switched back on. Up to 25 devices can be connected between fault isolators.
Laser smoke detector
Intelligent high-sensitivity laser smoke detector (combined with AWACSTM advanced algorithm, sensitivity is 10-50 times higher than ordinary photodetector, reaching 0.03% ft., can alarm early for smoldering fire. It uses laser diode, combined with special lens And mirror optical technology, built-in CPU, with environmental learning and automatic compensation, sensitivity can be adjusted in multiple steps.
Linear double threshold temperature detector
Recoverable linear double-threshold temperature sensing (temperature measurement) detectors are installed in cable trays, cable trenches, etc. in the production area. The detector conforms to the national standard of linear heat detectors and can continuously measure the temperature and set the alarm temperature threshold as required. The standard threshold is 85°C and 105°C. It can be recovered and reusable after a fire and has a circuit breaker. Short-circuit fault alarm function.
Time synchronization
The time synchronization setting of the automatic fire alarm system of Anqing Petrochemical Integrated Project supports the SNTP protocol and synchronizes the clocks of devices in the network through a graphic workstation. It is set in two levels (see Figure 1).
The first layer is the time synchronization between the graphic workstation and the fire automatic alarm controller. The graphics workstations (and NFN gateways) of each NFN network are used in the network through the NFN network at regular intervals (time intervals can be set). The fire alarm controller clock is updated automatically.
The second layer is the time synchronization between the graphics workstations, supports the SNTP protocol, and achieves time synchronization through the LAN. First, the graphics workstation with the IP address 193.168.1.10 is determined to be the time server. When other graphics workstations set the time synchronization, they point to the server's IP address SNTP193.168.1.10 to achieve time synchronization. The time server can also be served by a specific SNTP time server.
The system consists of information management, fire detection, accident warning, linkage control and other subsystems, including 119 telephone alarm and fire alarm police command system, intelligent automatic fire alarm system, fire information management system, geographic information system, analog display screen, etc. . Installation of photo-electric smoke detectors, intelligent high-sensitivity laser smoke detectors, addressed or non-addressed manual alarm buttons, fire alarms, and audible and visual alarms in various regions. Installation of explosion-proof flame detectors in key areas. Recoverable linear temperature-sensing (temperature measuring) detectors are installed at cable bridges, cable trenches, etc. Water spray, fire monitor and gas fire extinguishing controllers are installed in special fire protection areas and devices to achieve intelligent fire alarm and fire control linkage control.
Information Management System
1, the alarm by the police command system telephone alarm by the police command system consists of telephone information processing systems, digital audio recording system. The system automatically performs alarm call queuing, fire telephone call acceptance and identification, dispatching command sending, 119/counting alarm statistics, and 8 digital recording recordings, etc. Alarms are handled by alarm events. Using prepared firefighting plans, issued dispatch instructions to start warning lights in front of alarm, radio, and fire parking spaces.
2. Fire Information Management System The fire information management system records and displays the current fire location and alarm time, as well as the fire category, fire level, incendiary matter, weather and other relevant information according to the alarm location. The system displays the alarm information on the fire alarm simulation display screen while receiving the fire alarm automatic alarm, fire alarm telephone, 119 telephone queuing alarm or fire alarm auto alarm system failure. The system records and archives the data of the entire process of fire alarms in real time.
Fire alarm controller
The main control device of the system is a high-performance large-scale intelligent fire automatic alarm controller with a 32-bit microprocessor. It uses single-mode fiber access to the NFN (NOTIFIER Network) network to form a combination of centralized and decentralized alarm control fire alarm control. system. It adopts a modular structure and consists of a central processing unit, an intelligent control module, a fault isolation module, a monitoring module, and a safety barrier. The LCD display shows alarm information such as the type of fire alarm, alarm device, time, and location of the fire alarm. And can report abnormalities (demolition, disconnection, faults) of various devices to the control center display.
It uses multiple combinations of logic principles to comprehensively evaluate the alarm signals of multiple detectors and improve the reliability of detection and diagnosis. The power supply system uses automatic switching between the main and standby power supplies. The "affair control program" is stored in its non-volatile programmable memory. Once the system detects a fire alarm, it can automatically execute the specified program.
1. Monitoring module The monitoring module (FMM-1) installed in the module box monitors the status of the fire fighting equipment such as the fire alarm button, water flow indicator, and pressure switch, and transmits it to the fire alarm according to the status of monitoring or alarm. Controller. The module has the functions of automatic control recognition, line open circuit or short circuit monitoring, and a decimal code switch. When the monitoring module receives the fire-fighting equipment switching quantity closing signal, it transmits the signal to the controller through the bus, and the controller will send an acousto-optic alarm signal to display the working status of the specific part and the linkage equipment.
2. The intelligent detector of the interface module occupies an independent address on the bus and cannot parallel the common detector. Large detectors such as corridors and halls need to be installed with common detectors in parallel and connected via the interface module (FZM-1). It occupies an address in the bus and can connect up to 25 common detectors.
3. Fault Isolation Module The fault isolator module (ISO-X) automatically isolates the short circuit between the conductors in the SLC loop, limiting the number of detectors affected by the fault. When the fault is removed, the isolated part of the SLC circuit is automatically switched back on. Up to 25 devices can be connected between fault isolators.
Laser smoke detector
Intelligent high-sensitivity laser smoke detector (combined with AWACSTM advanced algorithm, sensitivity is 10-50 times higher than ordinary photodetector, reaching 0.03% ft., can alarm early for smoldering fire. It uses laser diode, combined with special lens And mirror optical technology, built-in CPU, with environmental learning and automatic compensation, sensitivity can be adjusted in multiple steps.
Linear double threshold temperature detector
Recoverable linear double-threshold temperature sensing (temperature measurement) detectors are installed in cable trays, cable trenches, etc. in the production area. The detector conforms to the national standard of linear heat detectors and can continuously measure the temperature and set the alarm temperature threshold as required. The standard threshold is 85°C and 105°C. It can be recovered and reusable after a fire and has a circuit breaker. Short-circuit fault alarm function.
Time synchronization
The time synchronization setting of the automatic fire alarm system of Anqing Petrochemical Integrated Project supports the SNTP protocol and synchronizes the clocks of devices in the network through a graphic workstation. It is set in two levels (see Figure 1).
The first layer is the time synchronization between the graphic workstation and the fire automatic alarm controller. The graphics workstations (and NFN gateways) of each NFN network are used in the network through the NFN network at regular intervals (time intervals can be set). The fire alarm controller clock is updated automatically.
The second layer is the time synchronization between the graphics workstations, supports the SNTP protocol, and achieves time synchronization through the LAN. First, the graphics workstation with the IP address 193.168.1.10 is determined to be the time server. When other graphics workstations set the time synchronization, they point to the server's IP address SNTP193.168.1.10 to achieve time synchronization. The time server can also be served by a specific SNTP time server.
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