Ten valve nine leakage "regulating valve technology abroad, leaving behind 10 years

  Regulating valve technology abroad, leaving behind 10 years

   Regulating valve in the mechanical products occupy a large proportion, foreign industrial countries, according to statistics, the output value of the regulating valve compressor, fan and pump the sum of the three, accounting for about 5% of the industrial output of the whole machinery. At the same time, as an important part of the major technologies and equipment, especially in the power, petrochemical, metallurgy, urban water supply and drainage system, adjust the valve but also plays a key role, but the amount is very large. At present, China's regulation valve business is about 6,000 more than the annual output value of more than 5 million yuan, 900.

When it comes to the status quo of the regulating valve industry in China, the Beijing Municipal Engineering Design and Research Institute, a professor-level senior engineer Guang-Jie Wang, Zhang Yanhui think, although our production enterprises engaged in regulating valve, but mostly SMEs. Few small businesses no drawings, no process, no more technicians, the products do not meet national standards, and even the production of fake and shoddy products, seriously disrupting the regulating valve market, but also a waste of valuable resources. Many large state-owned enterprises are faced with a heavy burden, financial difficulties, the problem of technological obsolescence, and no effort on technological innovation and investment in new projects. Regulating valve technology with the international advanced level is probably a difference of about 10 years, such as high temperature and pressure, and strong corrosion resistant products can not be produced, the regulating valve for offshore oil exploitation requires 10 to 15 years does not leak, we basically reach this requirement . Long-distance pipeline transport the mainline also with the foreign products, domestic products can only be used in the regional.
cryogenic valve
It is understood that the existing professional research institute in China 2, Factory Office Institute 12 of about 6,000 researchers engaged in regulating valve research and product development, a ministerial-level testing center and two sub-centers, able to carry out a safety valve, hydrophobic valves and general valves of the performance test, but the lack of high-temperature parameters of high-performance parameters, dynamic simulation test tools and test equipment. Less regulation valve industry, research institutions, research and fewer than 10% of the number of workers, weak research and development capabilities, basic stay in experience design. Or, still only in the light of some foreign structure and prototype some digestion and absorption of work, real product development work. Technical level regulating valve industry status quo from abroad, the data indicate decades, with the development of large complete sets of equipment abroad and a series of new equipment and prototype, ancillary regulation valve performance for large and high parameterization, automation and complete sets. And the series of new varieties is growing. Such as emergency shut-off valves, quick closing valves, fire dampers and water-cooled valve. Adjust the basic parameters of the valve has been greatly improved, such as gate valve maximum diameter of 4200mm, a temperature of 1050 ° C and a pressure of 105MPa. Ball valves 3050mm, temperature 1200 ℃, pressure of 70MPa. And foreign regulation valve products, varieties, good performance, reliable sealing, longer life expectancy. If the ball valve can reach more than 100,000 times without leakage. Cast iron gate switch 30000, reliable action, quick switch.
shutoff valve
In recent years, the rapid development of foreign regulating valve research institutes, and the United States alone, nearly 30 research institutes generally belongs to the company. For example, the Rockwell company has a very sound scientific research and testing base, hot, dynamic, wear-resistant, earthquake, fire and reliability aspects of performance testing of the product. The finite element method and computer-aided design has been widely used to adjust the valve structure design tends to be more reasonable. In contrast, the regulating valve industry in China's technology is relatively backward, regulating valve products are mainly concentrated in the low-end market, not the level of research and development of high-end products. Mainly the gap: only equivalent abroad in the early 1990s, the level of domestic regulation valve industry technical level. Complete set of low-level, as only meet 20 to 30 million kW thermal power station and 450 000 t / a ethylene unit supporting the use of valve. 600,000 kW of thermal power station with valve, 700 000 t / a or 100 000 t / a ethylene plant valve, still require a lot of imports. Industry sources, worldwide, adjust the valve drive device variety, complete specifications, safe and reliable. In recent years, the development of intelligent driving device, in this regard, domestic or blank. Gap with foreign countries on the overall domestic regulation valve industry. Performance unchanged for years behind technically, product design, new product development ability weak, specifications and varieties, can not meet the technological requirements of all walks of life. Product in tracking foreign technology development, process development up and down the effort is not enough, the manufacturing process is relatively backward.

Experts pointed out that, according to the regulation valve technology development, regulating valve market changes and some time in the future national development projects and policy development, regulating valve business, technology and product development in the future should focus on the following aspects: