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Electrical Fire Control System Of The Olympic Venues by blair zhang
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Electrical Fire Control System Of The Olympic Venues |
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Business,Business News,Business Opportunities
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(Note: The author, Zhang Yanjie: Beijing Zhi Heng Haibo Electrical Fire Technology Co., Ltd. Chief Engineer; Chen Jinbo: China Academy of Building Research Institute of Building Fire Dr, electrical engineer)
Abstract This paper HBZH-1000 type Electrical Fire The basic features of monitoring system was introduced to analyze the electrical fire control system used in the frequently asked questions, and finally to Olympics Tennis Center, for example, simple analysis of the electrical fire control system of practical application. Olympic venues
Key words electrical fire control system
Introduction Electrical fire control system into the market from the day, it received wide attention. Because in China the number of electrical fires long been high, has an impact is the development of our national economy can not be ignored as a serious problem. Fire departments in the supervision of the strong support in the research sector and the tireless efforts of the manufacturer, after nearly a decade of development, electric fire equipment has gradually entered the user to play a growing role, and gradually get the relevant departments and social recognition.
2008 XXIX Olympic Games in Beijing will be an unprecedented sports event, to protect the safety of the Olympic Games is a successful Olympic Games the most important issue. Effectively prevent electrical fires from occurring, to ensure the general safety of spectators and athletes, to preserve our national interests, is the bounden duty of the fire science and technology personnel.
Olympic Games a total of five venues and the National Conference Centre by the HBZH-1000 electrical fire control equipment, monitoring products to ensure the reliability and security, to make equipment truly play its role, we had carefully prepared, well-designed, carefully manufactured, following the electrical fire control system in the application of the Olympic venues to make a brief introduction.
1, Electrical Fire Surveillance System 1.1 electrical fire control system components
HBZH-1000 type electrical fire control system by the leakage (including current) probe to detect the controller and monitoring device composed of three parts. Leakage detection controller (current) supporting the use of probe required. All need to monitor the circuit branch points were installed to detect the controller are parallel to the second bus, monitoring equipment, industrial control by the use of a PC, and peripheral components.
Dedicated real-time dynamic management software can show the work of the various monitoring points, on duty at the control center by watching the computer screen will get all the control points of the work. Monitoring device has a large database, to store distribution system to produce records of all the circumstances, the officers concerned to facilitate query and analysis.
1.2 Fire Alarm System electrical parameters and characteristics of technology
1. Host Power Supply: 220V50Hz 2. Standby power: power seamless continuation, not less than 8 hours (long-life maintenance-free import of Panasonic batteries, and has short circuit, open circuit, over / under voltage, over charge / over discharge protection)
3. Has the Power On Self Test function and random self-test function and manual checking
4. Mass storage database, you can frequent alarms and operating conditions, to maintain all data within three years, no one can modify the "black box" function.
5. The big screen 17 "CRT (or 11" LCD) monitors, all Chinese characters display, simple
6. A voice alarm and warning light
7. 3 passwords for different levels of operation (to simplify)
8. Residual current value of the set, can be superimposed at the scene after the normal value of residual current field settings (with the residual current produced by generator) 0-2000mA set
1.3 Distributed Intelligent monitoring methods
Each probe controllers are microprocessor controlled, is a kind of intelligent self-judgment device, its operating current and leakage under the circumstances to decide whether automatic early warning, alarm, and the second bus through the communication control to report the alarm condition equipment.
1.4 2 bus communication Two bus field bus communication is a form of communication protocol can be open to networking and other communication systems. Second bus communication distance is 2,000 meters, the need for more long-distance communications mode can increase speed, so that communication distance is doubled, but the communication time to be extended, generally not more than 4000 meters to the right.
1.5 Installation and Commissioning Simple installation is a sign of the maturity of products, the constant installation and exploration, HBZH-1000 system leakage (current) probe the formation of two major series of products, namely, closed loop and open loop type. Closed-loop type of leakage (current) constantly open magnetic probe to detect high accuracy (error: ± 0.5%), good linearity and small magnetic leakage, but not easy to install; open-loop leakage (current) probe the magnetic circuit is broken , there are some magnetic flux leakage, and the precision of the low ratio of closed loop (error: ± 1.0%), but is easy to install, so should choose a different use. For the transformation of architecture, as power supply and distribution system has been put into use, if the use of closed loop current probe, you must install the power, and time-consuming and labor, thus more suitable for open-loop probe. For new construction, is more suitable for closed-loop probe.
To make installation easier debugging in the field, we also developed a portable leakage current generator. The leakage current of the generator can be adjusted between 0-2000mA, greatly reducing the equipment commissioning time and increased equipment reliability and flexibility of use. I am Cheap On Sales writer, reports some information about smoothies frozen fruit , zipfizz energy.
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