Submarine cable material recycling machine 1 Introduction submarine cables (submarine cable) are wire wrapped with insulating material, laid on the seabed and river water, used in telecommunications transmission. Modern submarine cables are using optical fiber as the material, transport phone and internet signals. The world's first undersea cable was in 1850 between England and France laid. China's first undersea cable was completed in 1888, there were two, one between Fuzhou and Taiwan and Shanghai Chuan Isle tail (freshwater), another 177 sea miles long by the Tainan Anping access to Penghu, 53 sea miles long. Submarine cable-submarine communications cables and submarine power cables. Mainly used for submarine communications cable communications business, expensive, but the high level of confidentiality. Submarine power cables are mainly used for underwater transmission of high-power electrical energy, and the role of underground power cables equivalents, on different occasions, and the laying of the way just applications. Since the submarine cable project is the world recognized the difficulties of complex large-scale projects, from environmental exploration, marine physics research, and cable design, manufacture and installation of complex technologies are applied, and thus one of the few submarine cable manufacturer in the world, There are Norway, Denmark, Japan, Canada, the United States, Britain, France, Italy and other countries, with the exception of manufacturing outside of these countries also offer the laying techniques. At present, China's submarine power cable applications still need to be imported. Usage submarine communications cables are mainly used for long distance communications network, typically used for more important occasions submarine cable between remote islands, military facilities across the sea. Submarine power cable laying distance is much shorter compared to the more communication cables, mainly for land between the islands, across a river or harbor, connected by land connected to each other or drilling rigs and other platforms. Under normal circumstances, the application of submarine cables for power transmission is undoubtedly better than the same length of overhead lines is expensive, but it is often more economical to use than the small and isolated as a regional power stations, offshore areas use more benefits. In the islands and rivers more countries, the wider application of such a cable. 3 Product History In 1850, people between North America and Europe laid the world's first undersea cable, in 1866, Britain in the Atlantic to lay submarine cables laying of a submarine cable connecting Britain and America. Compared with terrestrial cables, submarine cables have many advantages: First, do not need to pit road paved or stent strut, thus less investment, construction speed; the second is in addition to the landing area, mostly in certain test cables underwater, not to disrupt production activities and human environment by storms and other natural, therefore, cable security and stability, anti-interference ability and good security performance. 1876, after Bell invented the telephone, submarine cable adds new content, national large-scale laying of submarine cables accelerated pace. 1902 global submarine communications cable built. In 1960, the world's first laser come out, people started to use laser energy in the transmission characteristics of the optical fiber to transmit information. There are 32 countries and regions through submarine cable built the most modern global communications network, can be 300,000 road calls or data transfer at the same time in the world. Submarine cable in China has been developing rapidly. Built in 1993 in the Japanese submarine cable system, opened 7560 telephone circuits. 1997 in Shanghai Nanhui and build a world without difficult cable (FLAG), connected to the world's 20 countries, can be opened 120,000 telephone circuits. China began construction of Central America, Asia and Europe two cable, the total communication capacity will soar to 1.32 million road. 4 Categories impregnated wrap cable for no more than 45kV AC and DC is not greater than 400kV line. Currently only submarine cable installed in waters less than 500m depth. Self-contained oil-filled cables for up to 750kV DC or AC line. Since the cable is oil-filled, it can be without difficulty laid in water depths up to 500m of the sea. Extruded insulation (XLPE, EPR insulated) cable for AC voltages up to 200kV. EPR relatively more resistant polyethylene branches and local electrical leakage phenomenon, so the submarine cable to function more effectively. "Hydraulic" control cables applies only to a few kilometers of cable systems, because take very long cable pulled into the pipe, under great mechanical constraints. Inflatable (pressure-assisted) cable, wrap impregnated inflatable oil-filled cable than the cable is more suitable for long submarine cable network, but must operate under high pressure deep water, therefore increasing the design cables and accessories difficulties generally limited depth of less than 300m. http://mayu1991619.jdzj.com/ http://mayu1991619.b2b.youboy.com/ http://m1991619.cn.china.cn/ http://mayu1991619.955101.com/ http: // mayu1991619. cn.gongchang.com/ http://www.datoumao.com/gongsi/mayu1991619/ http://www.kejiqi.org/corp/mayu1991619/ http://mayu1991619.8j8.cc/ http: // mayu1991619. cn.b2b168.com// http://www.sooshong.com http://www.cntrades.com/b2b/mayu19911619/