Discussion: The Future of Technical Analysis of wire and cable industry
release date:2014-08-07 00:00 Source:https://www.hz-nchotel.com Views:
With the development of China's power industry, the requirements for supporting industries are increasingly high, wire and cable industries as power supporting an important part, is no exception, faced with the upgrading of the requirements to meet the needs of China's Electric Power Development . Future of wire and cable companies should improve technology, conservation of raw materials, the development of new environmentally friendly materials and other aspects. According to the author's judgment, that the future development of wire and cable industry future technology is mainly related to the following aspects.
The development of carbon fiber in recent years more and more quickly, there is a possibility that the future may be a carbon fiber cable replace traditional ACSR. Carbon fiber cable is the traditional ACSR (bare wire) alternative products, mainly used in 110kv ~ 220kv line. Compared with conventional steel core aluminum wire (ACSR), ACCC aluminum sectional area increased 29 percent, while 20 percent lighter weight per unit length, which sag under certain circumstances allow, using ACCC can greatly enhance the line transmission capacity, reduce loss. Power Grid Corporation by replacing a large number of ordinary wire ACCC conductor can be achieved without the new line grid expansion, significant savings in land, towers, engineering costs, in line with the policy direction of energy efficiency. Carbon fiber composite wire will be a revolutionary alternative to existing wire. Thus providing new opportunities for those companies in the field of carbon fiber composite wire has a strong competitive advantage.
HTS technology will be the next big development. Because of high temperature superconducting cable has a relatively low price, high capacity, low loss, no electromagnetic pollution and other advantages, highly regarded in the international community, many countries have increased development of superconducting industry to a strategic height. China has achieved a major breakthrough in high-temperature superconducting technology. In August, at the International Thermonuclear Experimental Reactor (ITER) program headquarters officials site supervision, the maximum length of the superconducting cable --765 meters CB (factory standard) superconducting cable conductor ITER device operating in silver colored Long-company offline.
Meanwhile, on the basis of high-temperature cables, the relevant state has also established plans for "high-temperature superconducting power transmission" of major projects to support. At present, China's annual imports from overseas high-temperature cables for domestic construction of about two billion yuan, is expected to 2020 global superconducting applications market will reach 244 billion US dollars (about 1.4869 trillion yuan), accounting for about 5 percent of high temperature superconducting cable share.
Therefore, the development and application of high temperature superconducting technology will be an important technology in the future wire and cable industry.
Aluminum rare earth processing technology will be of great development optimization. With continuous casting and rolling production process Electrical Pole has been quite popular in China, the performance is good. But the device is still at the level of the early 1970s, the technology is not much innovation. To actively promote the optimization of our unique aluminum rare earth processing technology, and use the introduction of some key equipment and technology add aluminum zirconium alloy, the transformation of coal-fired aluminum melting furnace to melt aluminum fuel oil or natural gas furnace, the total elimination of coal-fired aluminum melting furnace combustion coal dust and smoke emissions, and set the flue gas purification of flue gas filter means to improve the emissions quality, increase yield and reduce costs, while the conductor operating temperature increased from 70 ℃ to 150 ℃, carrying capacity increase of 1.6 times.
Aluminum and copper have been proposed for many years, has been used in Europe and other countries is very common, the range of application is not widespread in Asia, but in recent years many Chinese wire and cable companies have begun to try to aluminum and copper. General Cable has even and Shanghai Institute of wire and cable standards set out out of aluminum cable. Because copper compared to aluminum has a good electrical conductivity, thermal conductivity, and when the transport current can reduce energy loss, and therefore has been difficult to cut wire and cable manufacturers in regret. At present, China's wire and cable industry for more than 60 percent are manufactured using copper cables. Because compared to the lack of copper resources, and domestic copper resources are proven depth even overexploited.
Aluminum cable electrical properties comparable with copper cable, its flexibility is better compared to copper cables, aluminum cables changed in the past poor mechanical strength, low resistance to fatigue, joints prone to accidents and other shortcomings guarantee the continued stability of the cable in case of prolonged overload and overheating of the cable connection, also make up the traditional copper cables have memory effect and high rebound performance and other defects, reduce the line loss.
In addition, in terms of raw material production, processing, manufacturing and then to transport, installation, operation, recovery, all kinds of ways, aluminum cable compared to traditional copper cable, have unparalleled economic and environmental advantages, mm No doubt that will be the best alternative to copper cable, which is a good thing for heavy and light materials of the wire and cable business, at least to reduce the demand for funds, and to know that China is a very small country's copper production, copper basic imported, but is indeed a big country producing aluminum. Moreover, aluminum is much lower than the price of copper, to reduce demand for funds is undoubtedly very beneficial.
With the haze and other environmental pollution occurs, today there is a growing emphasis on environmental protection, wire and cable industry is no exception, is bound to face the environmental requirements. Wire and cable industry mainly refers to environmental protection materials, environmental protection. At present, the production of wire and cable widely used rubber, polyvinyl chloride, polyethylene and other polymer chemical materials. A large amount of poisonous gas in the production process. Therefore, we should actively develop environmentally friendly materials, production of environmentally friendly wire and cable. Fujikura and other cable companies in the development of environmentally friendly wire and cable, in order to monopolize the market, and actively promote the government enacted environmental protection standard wire and cable products. In recent years, the share of sales of environmentally friendly rapid expansion of wire and cable, wire and cable and ordinary retardant wire and cable simply can not compete. In addition, the corner generated in the wire and cable production process more than expected, may be recovered directly reused.
Semi-rigid cable from the wire and cable installation point of view, is also facing new trend, that is the sheath of thin cross section miniaturization. In view of the installation, ease of use and transport, as well as minimize the cost of raw materials, wire and cable products increasingly have a tendency of development, namely the development of the cable jacket thinner, smaller cross-section, while ensuring ampacity. Compared with the previous several, which requires an integrated wire and cable industry technology.