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How to choose the right electric ball valve

2023-01-03 14:12

According to the introduction, in the next 10 years, China will have more than 20,000 kilometres of oil pipelines to be built, including Russia, Kazakhstan and other transnational oil pipelines. In addition, following the "West-East gas transmission", China will have to build more than 20,000 kilometres of transnational gas pipelines and branch lines.

These projects require about 20,000 large-diameter pipeline ball valves and small-diameter ball valves, flat valves; will also build 10 to 20 million tons of large oil refineries, new construction, renovation and expansion of a number of 800,000 ~ 1 million tons of large ethylene plant, has been approved and to be approved 500,000 ~ 600,000 tons / year large PTA plant also has a dozen sets, which will provide a huge market for the valve industry; large chemical fertilizer and ammonia The construction of large-scale fertilizer and synthetic ammonia devices will also provide opportunities for the valve manufacturing industry; in addition, the direct liquefaction of coal is likely to form a new industry, due to the direct liquefaction of coal process medium working temperature, high pressure, high solid particle content, the valve has very high requirements, will form an emerging market.

According to valve industry technicians, in the development of these new electric ball valve, should pay attention to the promotion and application of new technology, such as the development of long-distance pipeline large-diameter overall ball valve should be used as a whole welding technology; in order to improve the valve sealing surface corrosion resistance and erosion resistance, a few manufacturers have begun to use supersonic flame spraying tungsten carbide process, and should pay attention to the use of nanoscale materials on the sealing surface coating modification, and laser melting process technology development.

In addition, over the years in the valve industry application of cobalt-chromium-tungsten plasma wire automatic overlay welding process should continue to promote to replace manual welding, to ensure the quality of the valve sealing surface; to achieve automatic control of the engineering device process, should strengthen the development of intelligent electric and hydraulic transmission device valves; accelerate the development of new transmission methods such as magnetic transmission, the development of a new closed magnetic drive electric ball valve series, to eliminate the valve stem and The leakage point between the packing, so that it is suitable for flammable, explosive, toxic, corrosive media and the requirement to lock, to avoid misoperation on the pipeline.

It is understood that China's large-scale ethylene plant equipment localization has reached 80%, ethylene supporting high-temperature and high-pressure valves under Sinopec has also achieved localization, good results, product quality and performance better than imported products. Sinopec localization office expressed great confidence in promoting the localization of valves, believe that the domestic backbone enterprises have the ability to undertake the project to tackle the task. After discussion, the delegates agreed that the 1500 lb electric ball valve could be localized and the 2500 lb electric ball valve could also be partially localized.