专注于SF6气体检测的专业化
What are the components of SF6 gas leak monitoring and alarm system?
SF6 gas is widely used in medium and high pressure equipment, and its safety has been widely concerned by people. SF6 gas is heavier than air and tends to gather in the low area after leakage, which is easy to cause hypoxia in the lower space. Moreover, SF6 gas generates harmful and toxic gases after high-temperature reaction between insulators and metal substances inside electrical equipment. Once the leak poses a threat to the atmospheric environment and personal safety, In accordance with the requirements of Chapter 8 of the "DL408-1991 Electrical Safety Working Regulations (Electrical Parts of Power Plants and substations)", Chapter 4 of the "DLT 639-1997 sulfur hexafluoride Electrical Equipment Operation, testing and maintenance personnel Safety protection Rules" and "JBT 10893-2008 The sulfur hexafluoride environmental monitoring System in the high-voltage combined electrical distribution room requires that an oxygen meter and an SF6 concentration alarm meter should be installed in the SF6 distribution device area to ensure the safety of on-site workers.
SF6 environmental monitoring and alarm device is widely used in major power system power grid companies, industrial and mining enterprises, as well as large and small substations in 10kV, 35kV, 110kV, 220kV, 500kV and above and other different voltage levels of SF6 switch room, GIS combination electrical room, SVG main transformer room and so on. It is mainly used to detect SF6 gas concentration, oxygen content, temperature and humidity in the ambient air. When the SF6 gas leakage content in the environment exceeds the standard or the environment is hypoxic, it can alarm in real time, and automatically open the ventilation device for ventilation, and the system has many rich functions such as sound and light alarm, working state voice prompt, remote alarm, background data upload, historical data query and so on.
SF6 Environmental monitoring alarm device (WINFOSS-S1P) includes SF6 monitoring host, SF6 and oxygen monitoring unit, temperature and humidity monitoring unit, fan controller, sound and light alarm, human infrared sensor, monitoring system software and power cables and communication cables.
1. Main functions
1, with SF6 gas concentration exceeded the detection side and display function to achieve real-time detection, display the SF6 concentration value of each gas detection unit (sensor) in the switch room. When the concentration exceeds 1000ppm (configurable), the current abnormal concentration is displayed in red and an audible and visual alarm is generated. 2, with the oxygen concentration detection and display function, polling detection, display the oxygen concentration of each gas detection unit in the switch room, when the concentration is less than 18%, the red font displays the current oxygen concentration value and sends an audible and visual alarm. 3, with SF6 and oxygen concentration monitoring function when SF6 gas concentration exceeds or oxygen concentration is lower than the set value, control the fan to start ventilation, until SF6 and oxygen concentration return to normal after ventilation for 15 minutes.
4, with the detection unit communication status display function, real-time detection, display the communication between the detection unit and the host in the switch room, if the communication failure, should display the current status and alarm.
5, with timed ventilation function
The SF6 monitoring host has 8 ventilation periods set throughout the day, 24 hours a day. 6. When the fan with forced ventilation function is stopped, it can be controlled in the system for forced ventilation for 15 minutes; When the fan is started, you can forcibly shut down the fan in the system and display the current fan running status on the display screen. 7, with temperature, humidity detection and display function
It can measure and display the temperature and humidity status in the current switch room.
8, with voice prompt function can control the voice prompt function on and off and volume adjustment function. 9, with voice alarm function can control the opening and closing of the voice alarm function, and can issue a warning prompt when the environment SF6 or oxygen concentration exceeds the limit. 10, with human infrared sensing function when the staff in and out of the monitoring of the power distribution room, through the human infrared detector within 5 meters around the host to sense the staff in and out, while the system can automatically prompt the safety of the environment. 11, with power failure alarm and system failure alarm function 12, with data automatic storage function can store no less than 5 years of historical data, automatically update the information records covering more than 5 years, the system in the case of power failure, data is not lost. 13, with the historical data query function can enter the system interface through the menu, query the previous alarm data and continuous monitoring data within 5 years.
1, the whole system needs to use standard industrial bus networking, easy installation, clear structure, stable and reliable. 2. 10.4 large touch LCD screen is used to provide humanized human-computer interaction interface. 3. SF6 and oxygen detection function probe side unit SF6 detection element adopts the infrared NDIR principle sensor imported from Switzerland to ensure the measurement accuracy and data stability and reliability, SF6 detection accuracy < 2.5%FS; The oxygen detection element adopts the original electrochemical technology sensor imported from Japan, and the detection accuracy is < 1% FS. 4, the number of monitoring units according to the SF6 leak point or monitoring room area, and evenly and reasonably arranged, installed in the switch room interval (switch cabinet) near the cable sandwich suitable position, should be about 10CM away from the bottom plate height, under normal circumstances, The monitoring area of each SF6 and oxygen monitoring unit ranges from 3 meters to 3.5 meters in the radius of the monitoring point in this arrangement.
3. Main technical parameters
SF6 environmental monitoring alarm device (Winfoss-S1P) can quantitatively monitor the leakage and oxygen concentration of SF6 gas concentration in the environment, and SF6 gas detection adopts high-precision infrared gas sensor, the accuracy can reach 1ppm, the detailed technical parameters are as follows: 1.SF6 and oxygen detection indicators 1.1SF6 Measurement range 1 to 3000ppmv Detection accuracy < 25ppm+2% 1.2SF6 Alarm point 1000 PPMV can be set between 100 and 1000 1.3 Oxygen measurement range 1 to 25% Detection accuracy < 1%FS 1.4 Hypoxia alarm point 18.0% available 15.0-18.5% Defined 1.5 Fan start point 19.6% can be set by the user 1.6 Alarm Response Speed Priority interruption, response speed ≤50ms 1.7 Alarm relay Capacity 220V AC/7A Remote alarm Hard contact 2. Temperature and Humidity detection specifications 2.1 Temperature detection range -30 to +70 ° C Accuracy ±1 ° C 2.2 Humidity detection range 1-99%rh Accuracy ±1%RH
3. General Technical Specifications 3.1 Power supply AC 165-260V/50Hz 3.2 Fan control relay Capacity 220V AC/10A 3.3 Fan Output contactor Capacity 380V AC/60A 3.4 Communication Cable ZR-RVVP4*0.75(FTP) European EN-55022 standard Shielded cable 3.5 Monitoring host display 10.4 inch large screen Chinese color LCD NEC LCD touch screen 3.6 Monitoring unit and monitoring host installation mode Wall mounted 3.7 Historical data storage time Alarm value 10 years; Normal value 5 years 3.8 Communication interface 1 CAN bus, 1 485 bus 3.9 Electrical strength > 2000V between the shell and the power supply 3.10 Driving capability 120 monitoring units 3.11 Communication distance 10000M 3.12 Fan starting conditions 1) Manual force; 2) Excessive SF6 concentration or oxygen; 3) User-defined timing period; 4) Sub-regional control: 3
Fourth, service guarantee
A. Provide on-site installation, commissioning and training guidance, and carry out on-site demonstration operation.
B. Provide detailed instructions and user guidance in Chinese.
C. One year free warranty, lifelong spare parts support and maintenance.
D. Hotline 365 days 24/7 answer user inquiries.