Valve industry encountered bottleneck technology innovation is the key
From the last century "ten nine valve leakage, up to now many products are exported to foreign countries, China's valve industry have made substantial progress. But from the China general machinery industry association valve branch, according to China valve market turnover of up to 50 billion yuan a year, which has more than 100 one hundred million yuan market by foreign enterprises valve occupation, to change the status quo, through innovative technology improve the quality of the valve is the key.
Valve technology is thrown 10 years abroad
Valve occupies a considerable proportion in mechanical products, according to foreign developed countries, the valve output is the sum of the compressor, fan and pump, accounts for about 5% of the whole machinery industrial production. At the same time, as an important part of major technical equipment, especially in electric power, petrochemical, metallurgy, urban water supply and drainage system, the valve is plays a key role, and the dosage is very large. At present, the valve more than about 6000 enterprises, of which more than 5 million yuan output value of 900.
When it comes to the status quo of China's valve industry, the Beijing municipal engineering design & research institute senior engineer guang-jie wang, Zhang Yanhui thinks, although a lot of enterprises engaged in valve production in our country, but many small and medium-sized enterprises. , a few small businesses have neither drawing nor the process, no more technical personnel, products do not conform to the national standard, and even produce fake and inferior products, severely disrupted the valve market, also waste the precious resources. Many large state-owned enterprises faced with heavy burden, financial difficulties, and the problems of old technology, and no power technical renovation and invest in new projects. Valve technology with the international advanced level and 10 years or so, much like some high temperature and high pressure and strong corrosion resistant products can not production, offshore oil mining use valve requires 10 ~ 15 years not leak, we are basically reach the requirement. Long distance pipeline lines also have with foreign products, domestic products can only be used on the feeder.
Learned, our country existing two professional institute, institute of administrative office in a factory 12, is engaged in the valve research and product development of scientific research personnel, about 6000 people in a ministerial inspection center and two branch, to the relief valve, steam trap valve performance test and general, but lack of high performance, high temperature parameters of dynamic simulation test method and test equipment. Valve industry research institutions is less, fewer than 10% of the staff, scientific research and development ability is weak, on the basic stay in experience design method at present. Or, still can only refer to foreign some structure and prototype, work on some of the digestion and absorption, and rarely real product development work.
Valve industry technology from abroad and the status quo, related data show that for decades, with the development of large complete sets of equipment technology, appear a series of new equipment and prototype abroad, and of the valve is characterized by large scale, high parameterized, automation and integration. And a series of new varieties is growing. Such as emergency cut-off valve, quick closing valve, fire and water valves, etc. Basic parameter of valve has a lot to improve, such as gate valves maximum diameter of 4200 mm, temperature 1050 ℃, pressure of 105 mpa. Ball valve 3050 mm, the temperature is 3050 ℃, pressure 70 mpa. And the foreign valve products, variety, performance is good, reliable sealing, long service life. Such as ball valves can reach more than 100000 times without leakage. Cast iron gate valve switch 30000 times, reliable action, switch is quick.
In recent years, the development of foreign research institutes valve quickly, the United States alone, nearly 30 institute, generally belong to the company. Such as Rockwell company has a very perfect scientific research and testing base, to hot products, dynamic, wear-resisting, earthquake, fire and reliability aspects of performance testing. Finite element method (fem) and computer aided design is widely used, the structure of the valve design tend to be more reasonable.