L project overview
Beijing Fortune Center is a comprehensive international business community that integrates the functions of Grade A office buildings, high-grade apartments, five-star hotels, conference centers, cultural and artistic centers, leisure and entertainment, and commerce. The planned construction land area of the whole project is 921100m2. The total construction area is 720,000 square meters. * * * Construction in three phases. The project is located between Beijing-Guangzhou Center and Kerry Center of East Third Ring Road North Road. It is not far from Beijing China International Trade Center, and faces the future new site of CCTV across the East Third Ring Road. It is the core area of the central business district.
The first phase of the project covers an area of 28,048 square meters. With a total construction area of 247160m2, it consists of a 40-storey office building, a 40-storey apartment tower, a serviced apartment (10) and an office board building (8 floors) connecting them. Tower apartment building height 120.95m, plate apartment building height 33.5m, tower office building height 154m, plate office building height 40.095m, two-story podium, clubs and commercial facilities. The third floor underground is a parking lot and civil air defense facilities. The second and third underground floors are connected with the second and third underground floors. The second phase includes a five-star hotel and a super high-rise apartment. The third stage of the project is an office building about 260 meters high. Fortune Center is a large-scale complex composed of several super high-rise buildings.
Fortune Center aims to create a special urban space and architecture in the central business district for people to communicate, stroll and relax, and create a novel working and living environment. Good "light environment" and "sound environment" will be created in the design. Do a good job in earthquake prevention, fire prevention, wind prevention and waterproof design, and adopt advanced building automatic control system, integrated wiring system, central air conditioning system, communication telephone system and fire safety monitoring system. Strive to build an intelligent comprehensive building complex integrating advanced network technology, communication technology and control technology to provide customers with a warm, comfortable and efficient working environment.
2 system composition
The fire alarm system of Fortune Center adopts the control center alarm system. Mainly consists of the following parts:
2. 1 Alarm system control host
The system is equipped with four NF-8 fire alarm controllers. These include:
L# alarm monitoring office building 21f-40f;
2# alarm monitoring office building 2F-20F；; ;
3# alarm monitoring office building B3F- 1F, apartment building1f-2f;
3F 40F apartment building 4# alarm monitor.
The four controllers are respectively responsible for the alarm function and linkage control function of fire-fighting equipment in their respective jurisdictions, and can all complete the control functions of fire pumps, elevators, non-fire electricity, fans and vents, fire shutter doors and fire doors through modules according to programming. All fire pumps (including relay pumps in refuge floor) and smoke control fans (including refuge floor) are led to the fire control center through hard cables. Fast Ethernet is used for data communication between transmission controllers. GEM3300(CRT) system is adopted as the upper management controller.
2.2 Fire detection and control equipment and other related equipment
The system has 3666 simulated intelligent smoke detectors. There are 3 126 standard smoke detectors. There are 50 analog intelligent temperature detectors and 48 14 standard temperature detectors. There are 494 intelligent control repeaters, 2477 detection repeaters and 802 manual alarm buttons. Also includes:
1) linkage operation control system (integrated operation control cabinet);
2) Fire telephone system;
3) Computer graphic display operation terminal;
4) printing equipment;
5) Standby power system.
2.3 Functions of fire fighting system
The fire control center of Fortune Building Phase I is located on the first floor of the skirt building business. As the disaster prevention command center of the whole building complex, it shoulders the monitoring and management of all disaster prevention network system equipment in the building, as well as the control, dispatch and command in case of fire. Its main functions are as follows:
Monitoring function: monitoring the working state of the field detector. Analogical analysis and judgment of fire alarm, fault and other information; Display the detected smoke data and curve by analogy; Monitor the working status of field linkage equipment; Monitor the working state of the system and lines; Monitor the status and results of the automatic test analog detector.
Control function: according to the predetermined program. Automatic linkage control of various linkage equipment; By touching the LCD screen of the host computer or using the CRT graphic display operating system, various linkage devices can be manually controlled individually or by category.
Recording function: recording the working state and process of the monitored object and the controlled object; Record the operation process of the fire alarm host; Record system and equipment failure information.
Management function: automatic and regular routine inspection and testing of the system; Provide smoke addition and heating test management functions of analog detectors; Realize the automatic adjustment of the sensitivity of the detector in the daytime, at night and when the air conditioner is turned on and off, and automatically correct the sensitivity according to the environmental conditions; Provide historical data of detector smoke and temperature curve.
CRT cg animation display operation function: automatic display of plane graphics of fire alarm components: smoke data and curve display of analog detection; Display the recorded fire alarm historical data; Through mouse, screen. Connection equipment required for operation and control.
3 engineering design
The first phase of Fortune Building is a super high-rise civil building. It is a special protection object. Adopt a comprehensive protection mode, that is, except toilets, toilets and toilets with an area of less than 5m2. A fire alarm device was installed.
3. 1 On-site detection and alarm design
Analog intelligent smoke detectors with independent addresses are installed in separate rooms, such as elevator foreroom, machine room, office and writing room. In big offices and other places. Considering the housing distribution that may occur during the secondary renovation in the future. The simulated intelligent smoke detector is adopted to ensure that there is enough alarm address margin during the secondary decoration. In corridors and other public areas. The detector repeater is equipped with several standard smoke detectors.
The underground garage adopts a detector repeater with several standard temperature detectors, and the detectors at the fire shutter doors are set with independent addresses.
Emergency manual alarm buttons shall be set in corridors, elevator forerooms, evacuation staircase forerooms and important machine rooms on all floors. This button has a telephone jack for direct communication with the fire control center.
Connect the self-contained alarm button in fire hydrant box to the fire alarm host. When the fire hydrant button's glass is broken. The alarm host can display the floor position corresponding to the fire hydrant. At the same time, the hydrant water pump can be linked.
The alarm point of each water flow indicator has an independent address. Each wet alarm valve, deluge valve and pressure switch has an independent alarm address.
Connect the 70℃ fire damper signal to the alarm host.
On the ground and underground evacuation stairs. Set the acousto-optic alarm device. After the fire alarm is confirmed, the alarm host sends out a control signal, so that the acousto-optic alarm devices on the fire floor and adjacent floors sound and the alarm lights flash.
All the above detection and alarm monitoring signals are automatically detected and monitored by the alarm host through the transmission trunk line of the system.
3.2 Fire linkage control
In case of fire. The fire hydrant button can directly start the corresponding fire hydrant pump at the scene and send a signal to the fire control center; The fire control center can also directly start and stop the fire hydrant pump manually, display the working and fault status of the fire hydrant pump, and display the position of the fire hydrant button according to the fire zone.
In case of fire, the pressure switch of the alarm valve sends a signal to the fire control center, which can automatically start the spray pump, and the fire control center can also directly start and stop the spray pump manually, displaying the working and fault status of the spray pump and the working status of the alarm valve, maintenance valve and water flow indicator. In the fire control center, the alarm water level of fire water tank overflow and the alarm water level of fire water pump stop are displayed.
Combustible gas detectors are installed in kitchens, along gas pipelines and in kitchens of apartment buildings. After the combustible gas detector gives an alarm, the corresponding gas pipeline cut-off valve will automatically close. At the same time, start the corresponding exhaust fan. The fire control center displays the working status of the cut-off valve and exhaust fan of the gas pipeline.
The fire shutter on the evacuation passage adopts two-step landing control; For the fire shutter in the non-evacuation passage, one-step landing control mode is adopted. The fire control center can display the alarm signal of the smoke detector and the closing signal of the fire shutter.
In case of fire. The fire control room can cut off the power supply of the access control host on the corresponding floor, open the evacuation door on the corresponding floor and receive its feedback signal.
The fire control center is equipped with all elevator running state simulation and control panels. In case of fire, the fire control center sends out control signals. Force all elevators to stop on the first floor and accept their feedback signals.
In case of fire, cut off the non-fire electricity automatically/manually according to the preset zoning and procedures, and stop the air conditioning operation. When the smoke detector, the temperature detector and the manual alarm button send out alarm signals. The alarm host can manually and automatically stop the air conditioning operation; Or when the 70℃ fire damper is blown. Interlocking stops the operation of the corresponding air conditioner or fresh air unit.
In case of fire. Automatically open the pressurized air supply outlets and corresponding pressurized fans on the fire floor and the upper and lower floors. When the booster air supply port is manually opened on site, the corresponding booster fan should be directly started. In case of fire. Turn on the booster fan on the refuge floor.
The fire control center can manually start and stop all smoke exhaust fans and pressurization fans, and can display all 70℃ fire dampers. 280℃ fire damper. The working conditions of pressurized air supply port and exhaust port, and the working and fault conditions of exhaust fan and pressurized air blower.
The fire center is equipped with a special intercom switchboard. In addition to the manual alarm button, there is also a fire intercom socket connected to the main engine, duty room, ventilation room and elevator room of the substation. Separate intercom telephones are set up. The refuge floor shall be provided with a fire telephone extension and a fire telephone jack every 20m. There is a line on each floor of the wing building and tower building of the fire telephone jack, and the refuge floor of the special fire telephone extension is a line.
The alarm host system has the function of broadcast linkage interface control. In case of emergency, the public address system can manually/automatically switch to the corresponding emergency broadcast partition for emergency broadcast.
In this project, a gas fire extinguishing system is set up in the computer room, exchange room and document warehouse on the fourth floor. In the gas fire prevention area, special gas fire control panel and emergency manual start-stop device are set up. When the smoke detector gives an alarm. The gas fire extinguishing control panel sounds the alarm whistle and gives an evacuation alarm; When the temperature sensor gives an alarm, the start-up delay of the gas fire extinguishing control panel begins, and after a delay of 30 seconds, the gas is ejected to extinguish the fire. At the same time, the alarm signal, blowout signal and fault signal are returned to the alarm host.
4 system characteristics
4. 1 distributed intelligent system
4. 1. 1 intelligent detection
The detector itself is equipped with cPu unit, which can analyze and judge the collected smoke data and complete the basic signal processing. It has the functions of continuous acquisition of fire parameters and intelligent data processing of simulation.
According to the smoke concentration, pre-alarm, fire alarm and linkage alarm can be distinguished. Realize multi-stage signal output.
The CPU unit can automatically detect the dust and dirt of the detector itself. Report to the host for cleaning. Automatic digital compensation, automatic adaptation to environmental changes before cleaning.
The CPU unit receives the automatic test signal and can automatically diagnose the working performance of the detector without adding smoke.
4. 1.2 intelligent controller
The controller has the functions of fire parameter simulation operation and fire pattern recognition. The main engine stores a large number of typical combustion process curves of different combustibles. When judging the fire, the main engine not only looks at whether the fog concentration value at the scene reaches the predetermined value. It is also necessary to compare the smoke data sent back by the detector with the rising rate of a large number of typical combustion process parameters stored in it. Therefore, the host computer's judgment on the fire is accurate and reliable. And can give an accurate alarm at the initial stage of fire.
According to the received multi-level fire alarm signal, based on the principle of safety and reliability. It is convenient and flexible to classify and link fire-fighting equipment. NF-8 host classifies different kinds of connected devices, which can be controlled according to a predetermined control program. Suitable for all kinds of linkage equipment. Such as smoke exhaust fan, fire pump, air supply and exhaust outlet, fire damper, fire shutter door, elevator, non-fire power supply and other equipment. According to the group, according to the position, according to the category linkage control, realize the optimal control of equipment.
The system has "attention alarm, fire alarm and linkage alarm" for the detection signal. Dirt alarm, fault level and other sensitivity values of different levels. And can be automatically adjusted.
The system can realize automatic fault diagnosis and self-notification for the whole connected equipment. When the system has a fault or short circuit, the system can automatically isolate or shield it according to the fault point and fault location, without affecting the normal alarm and linkage functions of other equipment.
The controller has the functions of operation training and fire simulation training. Can make the personnel on duty in case of fire emergency.
Familiar with the corresponding operation and the corresponding button position.
4. 1.3 intelligent control module
The system adopts intelligent control module, and its control output signal has three output selection modes: continuous level mode, pulse mode and instantaneous mode, which is suitable for the control of various linkage devices. The control and protection of its output current are completely realized by software. When the module outputs control, the CPU on the module will monitor and calculate the output current. When the measured control current is greater than the set module protection current. The module will be protected by overcurrent. The intelligent control module has the function of automatic short circuit isolation.
4.2 Intelligent Redundant Ring Disaster Prevention Network
NF-8 system is a NF network system, which is connected into a loop by two buses. The controller itself has a fast Ethernet network transmission interface of 100Mbps, which can easily connect up to 32 controllers to form a disaster prevention network with a maximum address capacity of 8 1 600. In the same building, several control machines and CRT are installed in a star-shaped way, and combined with floor repeaters and other equipment. When the distance between buildings is greater than 100 meters, the media converter (Medi-A-COM) in the controllers can be used as the network media, and the distance between controllers can be as far as 15 kilometers. When the normal communication path fails. The network will automatically switch to the alternate path. When the path fails in two places, the network will automatically switch to the alternate path. The isolated controller can still monitor its own system independently; When the controller in the network fails. The alternate path can still continue to communicate.
4.3 Distributed Control
Four NF-8 fire alarm controllers were used in the first phase of Fortune Building to form a disaster prevention network, which fully protected about 250,000 square meters of buildings. Multi-host distributed control mode is adopted. The four controllers respectively undertake the alarm function and linkage control function of fire fighting equipment in their respective jurisdictions, and all of them can complete the control function of fire fighting pump through modules according to programming. In addition, the controller 1 controls the fire relay pump on the 24th floor (refuge floor) of the office building through hard cables; Controller 3 controls the fire pump on the third floor underground through hard cables. Fast Ethernet is used for data communication between transmission controllers. GEM3300(CRT) system is adopted as the upper management controller. Realize the comprehensive information processing of the system. GEM3300 can monitor the fire alarm of the whole building and the linkage control of fire fighting equipment. Star networking is adopted between controllers. Adopting multi-host decentralized control can effectively reduce the risk of the whole control system, and the whole control system will not be paralyzed because of the accident of the central controller. Effectively solve the problem of control reset and control conflict.
4.4 Compatibility with construction equipment automation system
The first phase of Fortune Building aims to realize the "safety, high efficiency, comfort and environmental protection" of intelligent buildings. For the comprehensive management of construction equipment, there is an integrated optimization system. Intelligent system can automatically control and manage all kinds of equipment in the building. And provide high-capacity and high-speed two-way communication services. NF NETWORK network system adopts general TCP/IP communication protocol and computer centralized management system platform of buildings, which has become an organic part of the whole intelligent management system of buildings, and reserved communication interfaces for the second and third phases of the future projects. Provide reliable guarantee for the fire safety of Fortune Center.