Electrofusion welding is the name given to resistive implant welding of thermoplastic pipes. It is one of two main techniques used for the joining of polyethylene gas and water pipes. Electrofusion welding employs fittings that are placed around the joint to be welded. Metal coils are implanted into the fittings, and electric current is run through the coils to generate heat and melt part of the pipes, forming a joint upon solidification. There are two possible fittings used in electro fusion welding: couplers and tapping tees (electrofusion saddles). Electrofusion Machines/Electrofusion Welders are used for electrofusion fittings welding. Electrofusion Fittings are a heat treatment method compared to butt fusion methods and are used to generate heat. Electrofusion welding is a type of pipe welding and polyethylene fittings, in which there are special connections that have electrical resistance wire to create welding melting temperatures. The electric current is transmitted through the electrofusion welding eequipment and through the control box to the two ends of the connection. Yuda offers a fulll range of EF315 HDPE Electrofusion Welders, EF500 poly pipe electrofusion welding machine, EF630 HDPE Fitting Electrofusion Equipments and EF800 Electrofusion hdpe fittings machines Electrofusion Machine,Electrofusion Equipment,Electrofusion Welding Machine,Electric Fusion Welding Machine WUXI MEIERTE MACHINERY TECHNOLOGY CO.,LTD , https://www.wxpipefusionweldings.com
What are the common functions of coal mine intelligent broadcasting system
With the increasing importance of coal mine safety management and the advent of the era of smart mining, more and more products and technologies with modern technology have been applied to coal mines, which has brought new models and opportunities for coal mine safety management. Its most important feature is that it can transmit information to every corner of the mine at the first time of danger, so as to ensure the safety of each miner's life to a greater extent.
What are the functions of the broadcasting system
1. Publicity broadcast 2. Scheduled broadcast 3. Emergency broadcast 4. Remote jian listening function 5. Real-time voice broadcast 6. Full-duplex voice intercom 7. Power-off broadcast 8. Interconnection with various communication systems 9. Security monitoring system Linkage 10, online fault diagnosis 11, self-organizing system 12, recording function 13, volume adjustment 14, online upgrade function 15, convenient installation
System functions
1. Timing play function: The coal mine intelligent broadcasting system can play the program regularly according to the user's preset conditions.
2. Under normal circumstances, play some safety knowledge or music to improve the safety production awareness of employees and enrich the cultural life of employees; in emergency situations, the entire mine voice broadcast can be realized in the shortest time, and the safe evacuation of personnel can be effectively guided.
3. The terminal of the coal mine intelligent broadcast system supports intercom with the dispatching room and can be used as a fixed point-to-point dispatch.
4. Coal mine intelligent broadcasting system has the functions of whole mine broadcasting, district broadcasting, scheduled broadcasting, emergency evacuation, two-way conversation, and hourly time signal.
5. With emergency broadcast function, the continuous working time should be no less than 1 hour after the underground power failure.
6. Coal mine intelligent broadcasting system can realize linkage alarm function with safety monitoring, personnel positioning and other systems.