China's Cold-shrinkable Cable Accessories Industry

On November 15, 2011, the China Industry News reported such a news: Jilin Province Zhongke Cable Accessories Co., Ltd. invested 130 million yuan, and its annual production capacity reached 800,000 sets of northeastern largest cold shrinkable cable accessory product line. The R&D base has been officially completed and put into operation in the Changtai Jiutai Economic Development Zone. For the general readers, this news may not cause them too much attention, but it is a major move for the high-low voltage transmission and distribution and cable accessory manufacturing industries in the electric power industry in China, which is enough to affect the current situation. Since then, China's urgently needed cold-shrinkable cable accessory series of product R & D and supply pattern.

(1) According to authoritative experts, the cold shrinkable cable accessories are mainly used for high and low voltage transmission and distribution in the power industry. It is an upgraded product of the traditional cable accessories, as all its important components are used by the manufacturer with high elasticity and high tear resistance. Imported silicone rubber is pre-made and no fire source is needed during field installation. This saves time, labor, performance, and is less affected by human factors, which can greatly increase the safety and reliability of cable accessories. This type of product was developed by American 3M Company in the 1980s and was quickly applied to the entire power system. It took up over 30% of the U.S. cable accessory market in a short period of time, together with heat-shrinking and prefabricated cables. Attachments form three worlds.

Specifically, the cold-shrinkable cable accessory has the following advantages that are not available in other types of cable accessories: excellent corrosion resistance, anti-aging properties, long service life, and especially good electrical conductivity, which can effectively evacuate the conductor resistance and insulating material. Loss of heat, which can effectively improve the product life; with inorganic material properties, resistance to electric erosion, leakage traces and other electrical properties, more reliable operation; applicable wide temperature range, -55 degrees Celsius and zero transient 250 degrees can maintain normal working conditions; have good hydrophobicity, can be applied to a variety of environments, such as humidity, coastal salt fog, serious contamination, etc.; this type of product also has a great pressing force on the cable insulation, and the interface pressure The greater the interface insulation strength, the smaller the partial discharge; due to the existence of the continuous pressing force, the cold shrinkable cable accessory can also avoid the thermal expansion and contraction of the cable during operation, as well as the breathing phenomenon caused by bending and softening, and thus also This avoids creepage breakdown in air gaps between cables and accessories.

In addition, the cold shrink cable accessory also has a unique stress cone control unit. The product structure is designed with a built-in stepped stress cone. The stress evacuation is more effective and the product operation is more reliable. It has a covered semi-conductive shielding layer, and the intermediate joint product is external. The semi-conductive layer is injection molded and has a corresponding thickness so that the performance of the outer semi-conductive layer and the safety of the entire joint can be ensured. On this basis, the cold-shrinkable cable attachment also has a simple installation process, no special tools, no heating with fire, just follow the installation instructions to complete the installation; wide range of common, a variety of products can be applied to a variety of cables Wire diameter, easy to select and manage features.

Because of the above advantages of cold-shrinkable cable accessories, in recent years, major domestic power plants, substations, urban transformations, and industrial and mining enterprises have started to use cold shrink-type cable attachments as high-tech environmental protection products more and more. Its share in China's cable accessories has reached more than 60%, and is also increasing year by year. However, it is regrettable that this type of product is currently seriously under-capacity in China, especially in high-voltage products, and still half of the demand depends on imports.

(II) In view of this situation, Jilin Province Zhongke Cable Accessories Co., Ltd. began researching and producing such products as early as several years ago. Mao Shijie, the general manager of the company, is the key driver of this. After 2004, Mao Shijie has been to many developed countries such as South Korea, Japan and UAE. His colleagues are busy exploring the sights, but he is busy staring at the locals. Look at the poles. It turned out that he was observing the "mystery" of the developed countries in the transmission of electricity. One time I went to Japan and my colleagues went to Disneyland to play. He didn't even enter the gates of the park and went to the big road to look around. He found that the cable accessories used by the developed countries such as the United States, Japan, Germany, and South Korea are all cold-shrinkable. At that time, the heat-shrinking type was used in China, and they immediately realized that China's cable accessory industry will develop in the future. After returning home, he immediately contacted a Chinese friend in Japan, bought 5 sets of cold-shrinkable cable accessories for research, and later purchased more than a dozen sets in the United States and South Korea. At the same time, he also hired a number of domestic relevant experts, and invested millions of dollars in funding, with the country's top scientific research institutes to cooperate and fully develop cold-shrinkable cable accessory products. After more than one year of hard work, it finally took the lead in the domestic development of cold-shrinkable cable accessory cable terminals and 10 kV intermediate connection series products, and successfully passed the most authoritative national power grid company Wuhan High Voltage Research Institute and Shanghai Cable Research Institute. Test and started to market.

The road to success is always full of twists and turns. This time is no exception. The market reacted poorly to new products. Due to reasons such as system and thinking inertia, many users do not want to risk product updates. The new product is not recognized by the market, which means that the research funding of one million yuan, long-term consumption of human resources, may become a drag and drop. Many people in the company were disappointed and frustrated with this result, but Mao Shijie did not think so. He firmly believes that his judgment is in line with the development trend of China's cable accessories industry. He firmly believes that his products will certainly be widely recognized by the market. In order to resolve the unfavorable situation at the moment, Mao Shijie provided users with new products free of charge and patiently spread the advantages of new products to users. With his unremitting efforts, with tenacious unyielding will, with the firm confidence in the product, he and the market are engaged in a long-term "Tailor." In 2009, Mao Shijie’s all insistence finally paid off. In that year, the government’s policy on the cable accessories industry changed drastically. Some regions proposed the elimination of heat-shrinkable products and encourage the use of cold-shrinkable products. The change in policy was exactly in line with Mao Shijie’s original judgment. The news was passed to Jilin Province Zhongke Electric Power Equipment Co., Ltd. The whole company was excited because everyone knew that the day of elated. At that time, companies that could produce cold-shrinkable cable accessories in China could be said to be rare, and Mao Shijie’s company was one of them. For a time, users ordered one after another, and the company was busy with enthusiasm. The staff was full of energy and worked overtime in 24 hours, and the product was still in short supply. As a result, only a series of cold-shrinkable cable attachment products created a value of 30 million yuan for the company.

With the guidance and promotion of Mao Shijie, the company continues to grow and becomes a leading company in the industry. In addition to its products widely used in power, military industry, aerospace, high-speed railway, airports, nuclear power plants and other industries, the products are also exported to the Middle East and Southeast Asia. The annual export volume has reached 10 million yuan. The company also owns a number of its own patented technology, among which the cold shrinkable cable accessory project is listed in the national Torch Program and the national Torch Program. The company was also listed by the National Standardization Technical Committee of Wire and Cable as the main drafting unit of the industry standard, and participated in the "Three-phase rated voltage 6kv (Um = 7.2kv) to 35kv (Um = 40.5kv) extruded insulation power cable cold shrinkable accessories" Drafting of industry standards for accessory products. At present, the company has developed into a key enterprise in the development zone and is a major national-level Torch Program project. It currently employs 128 people, including 5 doctors, 6 masters, 46 college and engineering technicians, and 5 industry authorities. As a technical consultant of the company, there are 2 professor-level senior engineers and 3 senior engineers. Thanks to its strong technical force and unremitting efforts, the company has now developed and can produce more than 200 types of cold-shrinkable cable accessories. Its series of products have reached the international advanced level, but the price is only similar foreign products One-third.

What is worth mentioning is that, in the high-voltage-grade cold-shrinkable cable accessory products, the company has been able to achieve the highest voltage rating of 110,000. Currently, companies that are capable of doing such high-voltage grade products are rare in the country. Next, the company will develop 220,000 and 500,000 voltage grade cold shrinkable cable accessories. On this basis, the company also actively researches and develops other products that are urgently needed by other power transmission facilities. Now four series of cold shrinkable cable accessories, power transmission and transformation switches, power tower protection devices and substation insulation protection devices have been formed. Among the large series of products, the series of cold shrinkable cable accessories have reached the international advanced level, and the other three types of products are all domestic first-class levels. At present, the company's hundreds of products have been sold to various provinces across the country, and the number of users has reached several hundred. In Jilin Province, more than 80% of major power transmission projects use Jilin Provincial Zhongke Cable Accessories Co., Ltd. products.

This time, it invested 130 million yuan to build a production and R&D base for the largest series of cold-shrinkable cable accessories in Northeast China with an annual production capacity of 800,000 sets. Its main purpose is to expand production capacity and strengthen new product research and development to further meet the increasing domestic demand for such products. Product demand, try to replace imports. In order to achieve this goal, Jilin Province Zhongke Cable Accessories Co., Ltd. has selected all the world-class equipment in the base, of which only the testing and testing equipment has invested more than 18 million yuan, resulting in the detection from raw materials to the production process and even before the product leaves the factory. Inspections can all be completed at the base.

Its raw materials are all imported from the United States with the best quality and performance in the world. The products produced by this base will be upgraded in terms of quality, variety, and quantity.

(3) According to Mao Shijie's introduction to the China Industry News, the base is used to produce cold-shrinkable cable attachment series of silicone rubber molding equipment assembly lines, all from the world-famous silicone rubber equipment manufacturer—Germany Dexma and 2KM. The company's purchase is the world's top equipment, and the total investment in the entire base equipment exceeds 30 million yuan. Including 5 vulcanizing presses, 2 rubber injection molding machines, 4 pumping machines, 4 measuring machines, and 1 horizontal molding machine. The assembly line is fully automatic computer-controlled, and it has the advantages of segmented temperature control and small measurement error of the pump. Due to the large investment in the entire site, the company chose the world's leading manufacturing equipment. As a result, the quality of the vulcanization molding products and the finished product ratio of the cold shrinkable cable accessories produced are significantly higher than those of other manufacturers, and the product quality is reduced due to human factors. The adverse effects, in turn, provide a reliable guarantee for the production of high quality products.

It should be particularly noted that since the transmission and distribution of high and low voltage in the power industry requires high safety and reliability, the testing and testing capabilities of the manufacturers of various types of products for which they are supporting are also very high. In order to meet this high standard of users, Jilin Province Zhongke Cable Accessories Co., Ltd. has invested heavily in the construction of a lab with a leading domestic level, of which only experimental and testing equipment has invested more than 18 million yuan. At present, the company can conduct power frequency withstand voltage, partial discharge and thermal cycle including products, electrical properties such as breakdown strength, tracking resistance and dielectric loss of raw materials, and hardness, elongation at break, tensile strength, heat aging All kinds of physical and mechanical properties, including the ability to fully meet the needs of users of the test and testing, therefore, the company produced hundreds of cable accessories products, both in the production process, or before the factory, the indicators will be After rigorous testing and control, which effectively ensure the quality of the product. It is understood that currently there are only seven or eight companies with such high levels of testing and testing in China. The next step, the company will further increase investment, and strive to make the base of the cable accessories product testing and detection level reached the international advanced.

(D) While strengthening hardware construction, Jilin Province Zhongke Cable Accessory Co., Ltd. has a long-term vision, has set its sights on the world, and has established a quality/environmental/occupational health and safety integrated management system that can be called a high standard in China. Due to the establishment of a quality management system, the company's management work has become more scientific and legal. This has greatly improved the company's overall quality, quality awareness, management level and work efficiency. The level of product quality control and customer satisfaction have also been significantly improved; The establishment of an environmental management system has enabled companies to consciously abide by environmental laws and regulations, reduce their impact on the environment in their production and business activities, save energy, and reduce production costs, resulting in a green pass for products entering the international market. "Since an occupational health and safety management system was established, the safety, safety, and operational skills of all employees have been greatly improved in a short period of time. This has led employees to consciously guard against safety and health risks in their production and business activities. Greatly reduced the economic losses caused by work-related injuries and occupational diseases and the negative impact on businesses.

In the after-sales service, the company is adhering to the "user is God", "as long as the user needs, we must find ways to meet" the principle of service, established a team led by senior engineers, using domestic industry experts as technical consultants Level after-sales service team. All technical personnel engaged in after-sales service are college-level or above, have many years of on-site service experience and skills, and are trained by industry experts. They also hold qualifications for product installation issued by Wuhan High-Pressure Institute, an authoritative organization in the domestic industry. certificate. These after-sales service personnel are all-rounders and can both carry out technical consultations and conduct on-site installation and instruction. In terms of after-sales service, the company also promised to: within 24 hours of on-site service within the province, and within 48 hours of on-site service outside the province.

Mao Shijie was full of confidence in the future development of Jilin Province Zhongke Cable Accessories Co., Ltd. He analyzed that with the continuous improvement of China’s economic construction and the continuous expansion of the city’s size, during the “12th Five-Year Plan” period, the country will invest 5 trillion yuan in the power industry, an increase of 68% over the “Eleventh Five-Year Plan” investment. The cold shrinkable cable accessory is an indispensable accessory product for the construction and development of the electric power industry. Therefore, in the next five years or even longer, the market demand for the cold shrinkable cable accessory market will be very large, and it will have a good development prospect. In response to this industry trend, the company has formulated a corresponding development plan. Its overall goal is to make it bigger and stronger as soon as possible, do its utmost to meet the growing demand for cold shrinkable cable accessories in China, and try its best to replace imports. The major development of the power industry has made outstanding contributions.