Wednesday, December 29, 2010

【 Weak current College 】 Green Ocean Hotel fire linkage alarm system design example---Power By 【 China power house network 】


Summary: as the development of urban modernization, high-rise building more and more, due to the high-rise buildings have high building height, area, power equipment, electricity demand is high, the concentration, and other characteristics, which are made to the building's fire safety high demands, in view of this, I just from the automatic fire alarm and fire control system design, superficial table in individual design for such comments.   Keywords: fire a high-rise building, the preamble since the development of urban modernization, high-rise building more and more, due to the high-rise buildings have high building height, area, power equipment, electricity demand is high, the concentration, and other characteristics, which are made to the building's fire safety high demands, in view of this, I just from the automatic fire alarm and fire control system design, superficial table in individual design for such comments. Second, project examples of green ocean hotel is located in Zhuhai city lovers road, the entire project from the main building and an annex building, ground floor to the garage, bowling, sauna room, a three-storey main building as in», restaurant, function rooms, etc. Four-layer above, 11 rooms. Annex building a water pumping station, power distribution room air conditioning room, etc. Second floor to the Executive Office, the staff dining room, dressing room. Three-layer sandwich for roof garden, for pipe layers, four-layer ~ 11 layer for rooms, day surface installed hot water boilers, air conditioning, cooling towers, exhaust fan, etc.   High annex building construction height of 55 metres, with a total construction area 28000 square meters.   3. automatic fire alarm and fire control system design for emotion 1 automatic fire alarm and fire control system determines the design of the automatic fire alarm and fire control system, the first is clearly building itself features architectural features and functions, see the building's fire safety engineering design other professional facilities for electrical professional design requirements, and then under the relevant specification on building qualitative, determine the overall structure of the system. Under the high civil building design fire protection standard and the automatic fire alarm system design specifications ", the project for the second class of high-rise buildings, is the secondary fire alarm protection object.   The building's fire alarm and fire control system uses a central alarm system, its basic structure block diagram. The automatic fire alarm and fire control system's basic duties: control centre on the detection loop for gauging, when a detection zone is on fire, the detector signal acquisition to the site and immediately put the signal back to the control center of the controller, the controller's judgement the signal, to confirm that the ignition, the controller then issued to the onsite fire sound and light alarm signal and fire emergency broadcast.   Another important issue is the importance of effective through the linkage controller to need linkage issue execution of fire-fighting equipment, and cut off the non-signal fire power, eliminating the initial fire. 2 control centre of the composition, function, characteristics and control center located at the ground level. According to the specifications and control center for dual supply to ensure reliable power supply. Control centre main equipment for fire alarm control unit, multiple line fire linkage controller, bus fire linkage controller, fire telephone exchange, fire broadcasting equipment, fire power, self-powered, etc.
In the design, selection of fire alarm controller for ZA128K (H) Series intelligent Chinese fire alarm controller. From the principle, regardless of the area alarm controller or centralized alarm controller, all follow a pattern, which collects detection source signal → input modules → automatic monitoring unit → output unit. Fire alarm controller host part of the basic principles.   Alarm controller from functions are divided into the input cell either detection system and output units both control system of two major parts. Fire alarm controller input unit, through the signal cable and probe circuit contact, it keeps on building each detection area for surveys, read site information, and data analysis, to determine if there is fire. From the working principle, ZA128K (H) the alarm is analog transmission-type distribution intelligent system, the host of smart and intelligent interfacing between detectors, also known as a fully intelligent system. The so-called fully intelligent system that is in the entire system, not only has the ability to probe analysis also has certain analysis capability that through their own analysis, and then put that information to the controller. The controller receives a detection circuit for information, for further analysis, processing, complete more complex sentences and displayed. Because of the detector using environment, use some time after the contaminated, inevitably had a false positive factors. To reduce or even avoid this situation, combined with intelligent sensors, controllers use a fuzzy control technology that enables automated testing, that is, the controller does not have a fixed alarm preset threshold, the system can send the detector circuit fire detection parameters analysis operation, automatic removal of environmental impact, and at the same time, the controller also has a store fire parameter variation curve function and with the field acquisition of fire detection parameters comparison, to determine whether the alarm.   ZA128K (H) is no threshold analogue fire alarm controller. ZA128K (H) of the signal data transfer mode for the second bus system.   Detection signal circuit for 4 to 32-way, according to the actual project's existing needs and develop easily increase or decrease capacity, maximum each circuit can be set to 256 detection addresses and 31 linkage module (linkage module without sounding address number) so that the entire system can monitor 8192 detection addresses, and output 992 control contacts. Under this construction, the layer of detection points, linkage points, automatic fire alarm control system gives 14 detection signal circuit, including annex building three, main building, 11.   Each loop with capacity control in 80% ~ 85%, it has two advantages, for controllers run will be more stable, for building patterns in second decoration changes may result in detection of points increases, changes in the overall system. 3 detection loop detection circuit including detector, alarm buttons, fire hydrant indicator buttons, flow, pressure switches, etc. in the design of the selection of the smoke detector is an intelligent smoke detector, itThe point type photoelectric reduced light detector, it and the previous switches and analog detectors.   Previous detector based solely on whether parametric probe detection reaches a certain threshold to determine whether the alarm, the role of the trigger, and intelligent smoke detector is based on the new MCU appear a new intelligent probe, the probe has a built-in microcontroller, scene parameters collection capacity, and no longer play the role of the trigger, but a fire phenomenon directly proportional to the measured value, available to the controller of fires, discrimination, thereby reducing the error rate with self-diagnose feature allows applications to different alerts at any time modify the detector sensitivity threshold, photoelectric detector without the presence of radioactive elements and therefore eliminate the measurement of radiation leakage, exploration of the human body damage and pollution of the environment, it is an environment-friendly products.   In the company's thermal detectors are point-and-temperature heat detector, when fire detection area air temperature when it reaches a certain temperature, the alarm signal to the controller, it is not an intelligent probes. Manual alarm button to fire alarm system is complementary to the detector.   Mainly used when the automatic fire alarm system failure, the use of artificial Manual alarm mode to fire a fire control rooms, al. Design main settings in each floor entrances and obvious location height 1 5 metres, and meet in a fire in any location to the adjacent hand, button's walking distance not greater than 25 m.   (The civil construction electrical design code JGJ/T16-92 of 24.5.4.1 requirement is not greater than 25 m and the automatic fire alarm system standard "GB50116-98 8.3.1 request to not greater than 30 meters, designed by former). In the company's Manual alarm button for manual alarm and other similar products are the same.   But Lida products ZA2000DH coding manual alarm button comes with a phone interface to meet the automatic fire alarm system design specifications "described in section 5.6.3.2 alarm button to set the phone jack.   4 fire broadcasting systems and alarms of this building set bus system fire broadcasting system, route 8 line including the signal line, linkage, power cord, background broadcast line, the incident radio line usually used for regular radio, fire (even other accidents accident), the control centre of the output unit by the signal line related sound and light alarm driver modules or bus fire radio module ZA6804 issued a directive as a fire in the basement, connected underground floors and first floor. first floor and second floor with a large space should also be connected to the second floor; if the first floor there is a fire, you should reach this layer, Layer II and underground floors; such as second-tier or two above there is a fire, you should put through the fire and its adjacent to and below, to help field personnel evacuation. Design Institute in main tiers aisle, elevator before outdoor, Hall, underground garage, main equipment room, set a ceiling-mounted speakers or to meet in a fire in any position to the nearby speaker walking distance not greater than 25 m requirements according to the building of the pattern on each floor a certain number of bus fire radio module ZA6804, layers of speakers subregional control. annex building four, five, six-storey room bedside radio switch, through the layer of ZA6807 sound and light alarm drive modules. each alarm zone speaker basically sharing of a driver module control, each floor-room bedside radio, sharing a driver module control. in doing so, one can reduce the number of control module, reducing the layer broadcast system of plane wiring elements; the second control center control for convenience, when you need to make the alarm zone alarm, as long as the linkage control a module will be reached by background sound switch to accident the purpose of broadcasting, while reducing the workload Control Center host software. To ensure that the fire alarm and fire alarm signal sent region, the design of the automatic fire alarm and fire control system in addition to setting fire emergency broadcast system, also in the alarm key channel and export, staircase, elevator and manual alarm button and fire hydrant next to the button, set a certain amount of fire alarm equipment, such as electric Bell optical alarm, etc.   Various alarm zone alarm basic also share a ZA6807 sound and light alarm control driver module. 5 fire telephone system fire telephone system for multiple wire fire telephone system. Its core is a multiple-line ZA8000 fire phone hosts, according to the number of engineering needs to determine the capacity of the host. In accordance with the specifications, design in the fire pump room and generator room, the transformer substation, the main ventilation and air conditioning room, elevator machine room, wired, control centre set up fire telephone extension; in various layers of manual alarm button office telephone jack. The control center telephone exchange to radiation-wiring, to fire telephone extension and the phone jack. Fire private telephone exchange and telephone extension or a call between the phone jack is through the line to the independent routing and separate fire communication network. As the surface layer above the layer's layer area is not very large, depending on the architecture of the pattern part of the phone jack with a telephone circuit.   Control Center Tel host capacity requirements to greater than 40 road, the final selection of the host route with a capacity of 60. 6 fire control system for fire control system is the aforementioned control center output unit, is it to fire-fighting equipment, non-fire equipment control signal is on fire after the confirmation of the processing unit. Fire control system, this function determines its reliability is of considerable importance is directly related to the reliability of the fire-fighting work is quite important, directly related to the work of the fire-fighting work. The design of fire control system is the bus system linkage system and much line system interfacing of linkage control and system, on the fire upon confirmation from them according to the flow indicators, pressure switch, fire hydrant button action starting equipment located in the basement room related fire pump, startup located in the main building day face two, skirt the roof of a positive-pressure blowers, start a fire alarm equipment, switch, landing all elevator broadcast, control all smoke and exhaust blower, cut off the non-fire-fighting equipment, power distribution box, stopping the relevant range of air conditioning fan and rushed, exhaust airMachine and so on a series of fire protection measures. Whether bus linkage system or multiple line linkage system, the design must be and each linkage device a second line of design, this is very important.   The actual design process, in accordance with the relevant specifications, according to each control devices electrically controlled box second line, first consider the device control requires control centre issued a few commands, returns to the control center; several State and then meet the above requirements for control module. In fire control indoor also sets bus linkage control disk and much line linkage control tray, can some important device logic automated linkage control, you can also manually manipulate both one-on-one and intuitive control actions, and you can control the plate directly reflect the real-time status of the work equipment. Each linkage equipment in place are set manual operation button in case the fire control centre operation breakdown and other unexpected situations occur, an in-place still to be effective on the linkage between devices.

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