These projects need about more than 20,000 large-caliber pipeline ball valves and small and medium-sized diameter ball valves, flat valves;It will also build 10 ~ 20 large oil refineries of ten million tons, build and rebuild a number of large ethylene plants of eight million ~ one million tons, and there are more than ten sets of large PTA plants of 500,000 ~ 600,000 tons/year, which will provide a huge market for the valve industry.The construction of large fertilizer and ammonia plants will also provide opportunities for valve manufacturing;In addition, direct coal liquefaction is likely to form a new industry, because the coal direct liquefaction process medium working temperature is high, the pressure is high, the solid particle content is high, has the very high request to the valve, will form an emerging market.
According to the technical personnel of the valve industry, in the development of these new electric ball valves, should pay attention to the promotion and application of new technology, such as the development of long pipeline large-diameter integral ball valve should adopt the integral welding technology;In order to improve the corrosion resistance and erosion resistance of valve sealing surface, a few manufacturers have begun to adopt supersonic flame spraying tungsten carbide process, and attention should be paid to the application of nanoscale materials to modify the sealing surface and the development of laser cladding technology.
In addition, the automatic surfacing welding process of cobalt chromium tungsten plasma wire feed, which has been used in the valve industry for many years, should be promoted to replace manual welding to ensure the quality of valve sealing surface.In order to realize the automatic control of engineering equipment process flow, it is necessary to strengthen the development of intelligent electric and hydraulic transmission valves.Accelerate the development of a new transmission mode such as magnetic drive, the development of a new closed magnetic drive electric ball valve series, eliminate the leakage point between the stem and the packing, so that it is suitable for flammable, explosive, toxic, corrosive media and the requirements of locking, avoid misoperation of the pipeline.
It is understood that China's large-scale ethylene plant equipment has reached 80% of the localization, ethylene supporting high temperature and high pressure valves in Sinopec has been realized under the localization, the effect is good, product quality and performance is better than the imported products.Sinopec localization office said to promote the localization of the valve confidence is very large, I believe that the domestic backbone enterprises have the ability to undertake the project task.After the discussion of the delegates, it is agreed that the 1500-pound class electric ball valve can be made in China, and the 2500-pound class electric ball valve can also be partially made in China.
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