Discussion on Nuclear Power Valve

Nuclear power valve refers to the nuclear island in the nuclear power plant.N1regular IslandCIand auxiliary facilities of the power stationBOPValves used in the system. From the safety level is divided into nuclear safetyⅠLevel,ⅡLevel,ⅢGrade, non-nuclear grade. of which nuclear safetyⅠThe highest level requirements. 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. domestic nuclear power valve level

◆At present, the country has19The company has obtained a civil nuclear pressure equipment design and production qualification license issued by the National Nuclear Safety Administration, and can design and produce nuclear-grade valves. Its design, production of valve types are gate valve, globe valve, check valve, ball valve, butterfly valve, spring-loaded safety valve, regulating valve, throttle valve, diaphragm valve, bellows globe valve, etc. This19There are design and production cores in each enterprise.ⅠThere are five enterprises of grade valve. Most of the domestically produced valves for nuclear power plants are non-nuclear and nuclear.Ⅱ,ⅢStage Valves,Shanghai Valve Five Plant Co., Ltd. is an important supplier of nuclear power valves in China..Domestic nuclear grade valve development started in60Early years. Up to now, after decades of hard work, the country has formed a certain scale of nuclear-grade valve design, testing, manufacturing, and testing capabilities, and for the Qinshan Nuclear Power Plant Phase I and Phase II construction provides a large number of nuclear-grade and non-nuclear-grade valves, Made an important contribution to the localization of nuclear power valves.

◆At present, China has successfully developed and produced pressurized water reactor nuclear island.ⅠClass electric gate valve, check valve; nuclearⅠClass electric bellows stop valve, nuclear for fast breeder reactorⅡGrade electric bellows sodium globe valve and other nuclear grade valves with a higher level. At the same time, with the guidance of the national nuclear power development policy, this capacity is being rapidly strengthened and expanded. Nuclear power plant in the nuclear island, regular island of some important valves such as pilot operated safety valve, regulating valve, the main steam isolation valve and other domestic also can not provide mature and reliable products. At the same time, due to the limitation of experimental testing methods of domestic nuclear power valves, as well as technical and management reasons, the reliability data of nuclear power valve products are few, the level of automatic control is low, and the quality of products is unstable to be further improved. Nuclear power is based on safety and reliability as the first principle. This is the fundamental problem of the technical level and quality of nuclear power valve products that we need to make great efforts to solve, and it is also the concern of the industry. Need to take measures in technology, personnel, policy, software, hardware, management and other aspects to solve it.

Introduction of 2. Nuclear Power Valve Abroad

◆Compared with domestic nuclear power valves, foreign nuclear power valves are complete, the United States1942The Soviet Union built the world's first experimental nuclear reactor in1954The world's first nuclear power plant was built. In60Years of nuclear power technology development process, only in terms of nuclear power valves, foreign countries have formed a complete design, experiment, manufacturing, testing system, accumulated a lot of experience, mature products, reliable technology. Western companies such as Westinghouse in the United States, Viland in Canada, and Farmatone in France have mastered modern advanced nuclear power technology. Viran's nuclear power valves are almost in the world.90%All of the above nuclear power plants have a good supply record. Nuclear power plants in the world in the nuclear island and regular island in many important nuclear grade, non-nuclear grade valve, such as pilot operated safety valve, the main steam isolation valve, regulating valve and other nuclear power valve technology and market are well-known developed countries in the valve company monopoly, and the price is very expensive.

Technical status and development direction of nuclear power valves in 3;

◆With the sustained and rapid development of China's national economy, China's energy industry has put forward very urgent requirements. At present, from the urgent need to ensure China's energy security, optimize the energy structure and support the sustainable development of the national economy, China has formulated policies based on thermal power, vigorously develop hydropower and moderately develop new energy sources, such as nuclear power and wind power. The construction of nuclear power in China is being adjusted from experimental and compensatory to strategic and aggressive development. This is an excellent development opportunity for China's nuclear power industry, and the huge demand for nuclear power plant valves has brought broad market prospects to domestic and foreign valve manufacturers.

◆The increasing degree of localization in the field of nuclear power is beneficial to the solution of valve supporting capacity. In order to reduce the cost of nuclear power, the state actively promotes the localization of various important equipment in the nuclear power industry policy. For the production of nuclear power valve enterprises, on the basis of striving for the support of the national industrial policy, increase the intensity of independent research and development, and unite with various external cooperation Manufacturers can make breakthroughs in valve driving devices, control devices and transmission devices, and solve the bottleneck problem that restricts the improvement of valve performance