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2013-05-08
Nuclear power valves discuss nuclear power valves refer to valves used in nuclear power plant nuclear island N1, regular island CI and BOP system of power plant auxiliary facilities. From the safety level is divided into nuclear safety level I, II, III, non-nuclear level. Among them, the nuclear safety level I is the highest. Nuclear power valve in nuclear power plant is the use of a large number of media transport control equipment, is an essential part of the safe operation of nuclear power plants. 1. the level of domestic nuclear power valves ◆ At present, 19 domestic enterprises have obtained the civil nuclear pressure equipment design and production qualification license issued by the National Nuclear Safety Administration, which can design and produce nuclear-grade valves. Its design, birth
Power station valve
Power station valve profile "power station valve" also known as the power station special valve, mainly applicable to various systems of thermal power station on the pipeline, cut off or connected to the pipeline medium. Applicable medium: water, steam and other non-corrosive media. Compared with other valve products, power station valves are characterized by high temperature and high pressure, unique self-sealing design, the higher the pressure, the more reliable the seal. Due to the special performance and technical characteristics and working conditions, the product has also formed characteristics that cannot be replaced by other products. Main Design Specifications for Power Station Valves Design and Manufacture GB/T12234ASMEB16.34 Structure Length JB/T3595 Interface Connection Dimensions JB/T3595
Corrosion-resistant valve
1. As one of the strong corrosion media, sulfuric acid is an important industrial raw material with a wide range of uses. Sulfuric acid with different concentrations and temperatures has great corrosion resistance to materials. Carbon steel and cast iron with concentrated sulfuric acid above 80% and temperature less than 80 ℃ have better corrosion resistance, but it is not suitable for high-speed flowing sulfuric acid. It is not suitable for pump valve materials. Ordinary stainless steels such as 304 0Cr18Ni9 and 316 0Cr18Ni12Mo2Ti are also of limited use to sulfuric acid media. Therefore, the pump valve for the delivery of sulfuric acid is usually made of high silicon cast iron and difficult to process, high alloy stainless steel 2.
