The manufacturing level of the hottest valve shoul

2022-08-04
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The level of valve manufacturing needs to keep up with the development of the situation

it is learned from the valve branch of China general machinery industry association that in the next 10 years, new valve products supporting the construction of major projects such as thermal power, nuclear power, hydropower, large petrochemical, oil and gas gathering and transmission pipelines, coal liquefaction and metallurgy will become the focus of development and are expected to lead the rapid growth of the entire valve market

it is reported that in the next 10 years, China will have more than 20000 kilometers of oil pipelines to be built, including transnational oil pipelines such as Russia and Kazakhstan. In addition, after the "west to East Gas Transmission", China will build more than 20000 kilometers of transnational gas transmission pipelines and branch lines. These projects require more than 20000 large-diameter pipeline ball valves, medium and small-diameter ball valves and flat valves; It will take about 15s; Build 10 ~ 20 ten million ton large-scale oil refineries, build, reconstruct and expand a batch of 800000 ~ 1million ton large-scale ethylene plants, and there are also more than a dozen approved and pending 500000 ~ 600000 ton/year large-scale PTA plants, which will provide a huge market for the valve industry; The construction of large-scale chemical fertilizer and synthetic ammonia plants will also provide opportunities for the valve manufacturing industry; In addition, direct coal liquefaction is likely to form a new industry. Due to the high working temperature, high pressure and high solid particle content of coal direct liquefaction process medium, there are high requirements for valves, which will form a new "market". Its core layer and foundation is IOT

according to experts of the association, when developing new products of these valves, attention should be paid to the promotion and application of new process technology. For example, the development of large-diameter integral ball valves in long-distance pipelines should adopt integral welding technology; In order to improve the corrosion resistance and erosion resistance of the valve sealing surface, a few manufacturers have begun to adopt the supersonic flame spraying tungsten carbide process. At the same time, attention should be paid to the coating modification of the sealing surface with nano materials and the development of laser cladding technology. In addition, the cobalt chromium tungsten plasma wire feeding automatic surfacing process applied in the valve industry for many years should continue to be promoted to replace manual welding to ensure the quality of the valve sealing surface; In order to realize the automatic control of engineering device process flow, the development of intelligent electric and hydraulic transmission device valves should be strengthened; Speed up the development of new transmission modes, such as magnetic transmission, and develop new closed magnetic transmission valve series to eliminate the leakage between the valve rod and the packing, so as to make it suitable for flammable, explosive, toxic and corrosive media and pipelines requiring locking and avoiding misoperation

therefore, the valve industry should establish enterprise groups, increase scientific and technological investment, and develop high, large, fine and sharp valve products; Strengthening the emergence of product intelligent composite materials may help to reduce the cost of manufacturing composite materials, and make the standards keep up with the needs of the development of the situation in terms of quantity and level

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