The design of the author refers to the relevant norms are: "Lightning Protection Design Specification for Buildings" (GB50057-94, 2000 edition); "high-rise civil building design and fire protection code" (GB50045-95, 2001 edition); "Building Electronic Information System Lightning Technical Specification" (GB50343-2004); "Lightning Protection Technical Specification for Buildings" (GB50343-2004); "Lightning Protection Technical Specification for Buildings" (GB50343-2004) (GB50343-2004); Engineering Design Code for Comprehensive Wiring Systems for Buildings and Buildings (GB/T50311-2000); Design Code for Automatic Fire Alarm Systems (GB50116-98); Building Design Code for General Hospitals (JGJ49-88); and Technical Specification for Cable TV System Engineering (GB50200-94).
The design of the author's reference to the national building standards design atlas are: "building electrical engineering design of commonly used graphic and text symbols 00DX001"; "Fire Alarm and Fire Linkage 99SX501"; "Intelligent Buildings Weak Electricity Engineering Design and Construction Atlas 97X700"; "Intelligent Building Integration Design Atlas 03X801-1"; "Comprehensive Wiring System Engineering Design and Construction Atlas 02X101-3"; "Comprehensive Wiring System Engineering Design and Construction Atlas 02X101-3". Construction Atlas 02X101-3"; "Electrical Vertical Shaft Equipment Installation 04D701-1".
The weak power system of this design includes: automatic fire alarm and fire linkage control system; antenna TV system for ***; broadcasting system (including background music and fire emergency broadcasting); ward call system; comprehensive wiring system (including computer network and communication system). The mobile communication signal coverage system is designed and installed by the telecommunication department and is not included in the scope of this design.
I. Automatic Fire Alarm and Fire Linkage Control System
System protection object classification of this building is a class of fire prevention building, the protection level of automatic fire alarm system is set according to the first level of protection for the centralized alarm system.
Composition of the system system consists of automatic fire alarm system, fire linkage control system, fire emergency broadcasting system, fire communication system, elevator monitoring and control system, non-fire-fighting power cut-off control system. The total number of address codes of the system should be reserved 15% to 20% margin. Fire Control RoomThe fire control room of this project is located on the first floor and is equipped with a door leading directly to the outdoors.
The fire control equipment in the fire control room consists of fire alarm control mainframe, linkage console, CRT monitor, printer, emergency broadcasting equipment, fire communication equipment, elevator monitoring panel and power supply equipment.
The fire control room can accept fire alarm signals from detectors of smoke, temperature, flame, and combustible gas, and action signals from water flow indicators, service valves, pressure alarm valves, manual alarm buttons, and fire suppression buttons. It can display the water level of fire fighting pool and fire fighting tank, and the power supply and operation status of fire fighting pump. It can linkage control all the equipment related to fire fighting.
Fire control room to the weak well using metal trunking laid in the ceiling. Layout, but also pay attention to not let the fire control room has nothing to do with the passage of electrical wiring.
Fire control room set up a special equipotential connection terminal box, set up a special grounding trunk, using BV-1X25mm2 through the PVC pipe to the building total equipotential connection terminal box. The automatic fire alarm system adopts *** grounding device, and the grounding resistance is not more than 1 ohm. From the equipotential terminal box to the fire electronic equipment dedicated grounding wire BV-1X4mm2.
Fire control room equipment using dual power supply and automatic switching device at the end of the device, and the use of UPS as a standby power supply, UPS provided by the equipment manufacturer.
Automatic fire alarm system of this project adopts centralized alarm control system, according to the two-bus design.
The project adopts temperature-sensitive detectors in the boiling water room and disinfection room, and temperature-sensitive cables are laid in the ceiling and under the raised floor of the cable racks on the basement level, the transformer and distribution equipment, the fire control room on the first floor, and the integrated wiring room. Other than that, the rest of the premises are equipped with smoke detectors. The plane layout of the detector, fully comply with the provisions of Article 8.1.1 to 8.1.14 of GB50116-98.
There are three manual alarm buttons on each floor of the project, which are located in the front room of the elevator in the middle of the building, on the aisle side of the front room of the evacuation stairwell on the left side, and on the aisle side of the front room of the evacuation stairwell on the right side, which meets the requirements of Article 8.3.1 of "GB50116-98". Manual alarm button with telephone jack.
This project is equipped with a fire hydrant break glass button in each fire hydrant box, which can be linked through the fire alarm controller to start the fire pump, meeting the requirements of Article 7.4.6.7 of GB50045-95. The location of the fire hydrant box is funded by the equipment professional.
The project sets sound and light alarm device at 0.2m above each stairway door on each floor, which can indicate the location of the fire floor in case of fire, and guide the firefighters to look for the fire floor, so that it is convenient to fight the fire.
Automatic fire alarm lines are NH-BV-2X1.5 through the pipe SC20 in the ceiling concealed.
After the fire alarm, the fire control room controls the positive pressure air supply valve and electric fire damper on the relevant floor according to the fire condition, and starts the corresponding positive pressure air supply fan and smoke exhaust fan, the smoke exhaust valve 2800C is fused closed, and the fire damper 700C is fused closed, and feeds back the action signal to the fire control room.
In the fire control room, the fire hydrant pump, sprinkler pump, positive pressure fan and smoke exhaust fan can be controlled automatically through the linkage control module or manually through the direct control line at the linkage console and receive their feedback signals.
This project linkage control line are pre-buried pipe SC20, direct control line are used ZR-KVV-7X1.5 through the pipe SC40 laying to the corresponding equipment electrical control box.
Control of fire hydrant pump
The indoor fire hydrant system is a temporary high-pressure water supply system, and the booster pump is automatically controlled by the pressure switch to maintain the pressure of the pipe network at normal times, and when the pressure of the pipe network is too low, the main pump will be started directly.
After the fire hydrant button is activated, the fire hydrant pump will be started directly, and the fire control room can display the alarm part and accept the feedback signal.
The linkage console in the fire control room can manually control the hydrant pump through the direct control line and receive feedback signals.
In the fire control room should also be able to display the hydrant pump power status, working conditions and fault conditions.
The above control and display functions in line with "GB50116-98" Article 5.3.2, 6.3.1 and 6.3.2 requirements.
Control of sprinkler pump
The automatic sprinkler system of this project is a temporary high-pressure water supply system, and the booster pump is automatically controlled by the roof tank and pressure switch to maintain the pressure of the pipe network in normal times, and when the pressure of the pipe network is too low, the main pump will be started directly.
When the sprinkler head sprays water in the fire, the water flow indicator moves and alarms to the fire control room, and at the same time, the wet alarm valve moves and strikes the hydraulic alarm bell, the pressure switch alarms, the signal is transmitted to the fire control room to start the sprinkler pump, and the fire control room accepts the feedback signal.
The linkage console in the fire control room can manually control the sprinkler pump through the direct control line and accept the feedback signal.
In the fire control room can also display the power supply status of the spray pump, working conditions and fault conditions, as well as water flow indicator, wet alarm valve, safety signal valve work status.
The above control and display functions are in line with "GB50116-98" Article 5.3.2, 6.3.1 and 6.3.2 requirements.
Control of smoke-proof and smoke-exhaust facilities
When fire occurs, the fire-fighting linkage console opens the panel smoke vent on the corresponding floor and starts the roof smoke-exhaust fan. When the temperature reaches 2800C, the fuse of the smoke exhaust valve melts and the smoke exhaust fan is stopped by the interlock.
The linkage console in the fire control room can manually control the smoke exhaust fan through the direct control line and receive feedback signals.
The fire control room automatically or manually controls the starting and stopping of the positive-pressure air supply fan and links to open the positive-pressure air supply outlets on the fire floor and its neighboring floors.
After the fire damper on the air duct connected to the air-conditioning unit and the air supply fan is closed, the air-conditioning unit and the fan will be stopped and the alarm will be triggered.
The project has set up a linkage control module box in the substation on the basement floor, and some non-fire-fighting low-voltage outgoing circuit breakers of the air-conditioning units and other parts of the circuit are equipped with a shunt release device, which is used by the fire-fighting control room to disconnect the relevant power supply after the fire has been confirmed.
The above control and display functions are in line with the requirements of Article 5.3.2 6.3.9 of GB50116-98.
Fire emergency broadcasting system of this project fire emergency broadcasting and background music *** with a set of audio devices. The system adopts 100V constant voltage output method, and set up a standby PA whose capacity is 1.5 times of the capacity of simultaneous fire emergency broadcasting.
In case of fire, automatically or manually open the relevant layer or in the emergency broadcasting, while cutting off the background music broadcasting. Fire emergency broadcast control program is: the first floor fire, start the first floor, the second floor and the underground floors or in the emergency broadcast; basement fire, start the first floor and the underground floors fire emergency broadcast; more than two floors on fire, start the floor and adjacent upper and lower floors fire emergency broadcast.
Public **** place speaker installation power of 3W, in addition to the ground floor and stairs out of the roof from the ground 2.5m wall mounted, the rest are embedded in the ceiling installation. Layout, to ensure that from any part of a fire partition to the nearest speaker distance of not more than 25m.
Fire communication system of the project in the fire control room to set up a direct alarm outside the telephone, and set up a special telephone switchboard for fire protection.
According to the requirements of Article 5.6.3 of GB50116-98, in addition to setting up telephone jacks at each manual alarm, special extensions for fire-fighting telephones are set up in the transformer substation on the basement floor, the fire control room on the first floor, the fire pump room outdoors, the fire elevator room and smoke extraction room on the rooftop, and air-conditioning plant room.
Elevator monitoring and control system all elevator monitoring control panel is located in the fire control room on the console. According to the fire situation, the elevator monitoring panel sends out instructions to command the elevator to run according to the fire fighting procedures. Any one or all of the elevators can be spoken to, explaining the reasons for changing the operating procedures, in addition to the fire elevator to keep running, the rest of the elevators are forced to return to the first floor. The elevator display panel shows the operation status of each elevator, such as floor number, normal, fault, open door, close door and so on.
According to the requirements of Article 6.3.3.10 of GB50045-95, there should be glass-breaking buttons and key switches beside the door of the first-floor fire elevator for use by firefighters when putting out fires, and the key switches have the priority of control.
Disconnection control system for non-fire fighting power supply In case of fire, the fire control room automatically disconnects the normal lighting and power supply of the fire zone through the control module in the power distribution room according to the fire situation.
Two, *** with antenna TV system
In order to reduce the loss, the project will be located in the TV front-end box in the six floors of the weak well, near the AC220V power outlets. Distribution branch box is set up on each floor. The system adopts the distribution branching method, the user level shall not be lower than 65dB. In addition to the ward terminal box 2.0m from the ground, the rest of the terminals are installed 0.3m from the ground.
Three, ward call system
This project has wards from the second floor to the eighth floor, and the ward call system should be set up according to the provisions of Article 5.4.11 of JGJ49-88. The host of each floor is located in the nurses' station, and the wall-mounted type is selected. Corridor display screen hanging in the center of the corridor, the host and the corridor screen near the AC220V power socket. Corridor screen selection of double-sided display type. As the system selection by the party set, elected the basic type, the bedside unit from the ground 1.1m; elected intercom type, the bedside unit from the ground should be 1.4m. Bathroom should be set up to call the button, so that the patient emergency call for help.
Construction, in the host wall-mounted, display near the ceiling, door, bedside unit and bathroom call button should be pre-buried junction box.
Four, integrated wiring system
The project set up a comprehensive wiring system to support voice, data, graphics, images and other multimedia services.
The project set up in the first floor of the integrated wiring room, room set up equipotential bonding terminal box, and set up a special grounding trunk, using BV-1X25mm2 through the PVC pipe to the building total equipotential bonding terminal box. Comprehensive wiring system using *** with grounding devices, grounding resistance is not greater than 1 ohm.
The system adopts non-shielded ultra-five integrated wiring system. Computer vertical trunking using fiber optics, telephone vertical trunking selection of Category III large logarithmic cable. Each floor of the weak well set up 19 "standard cabinet, fiber optic link unit LIU, hub HUB and floor wiring equipment DF are assembled in the cabinet.
The project set up information outlets according to the actual needs of each office, treatment rooms, duty rooms, nurses' stations, conference rooms, fee collection and pharmacy. Information outlets are selected RJ45 dual-port information outlets, each information outlet wiring cable for a 4-pair twisted cable and a 2-pair twisted cable, corresponding to voice and data.
Weak power well laying 400x200 dedicated trunking, after installation, each layer with fireproof material layer blocking. Weak wells are usually laid 40x5 flat copper tape, as the special grounding line of the weak system, weak wells are set up on each floor LEB local equipotential connection terminal box. Each level of the walkway ceiling laying weak wire groove, the weak power lines separated by a partition.
The nurses' station on the second floor to the eighth floor is equipped with a separate telephone junction box, and the nurses' station is responsible for the unified management of the telephone of the wards on this floor.
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