Most of the key parts of pump and valve equipment in China are controlled by people. The pumps and valves in nuclear power units are key parts, accounting for nearly one quarter of the equipment investment. At present, domestic companies can not be fully autonomous to make wider use, so foreign companies have obtained a large number of monopoly profits. It is learned that the procurement of imported valves for Ling'ao phase II nuclear power plant alone reached US $70million, and the domestic procurement volume was less than 4%. Pumps and valves in nuclear power units are key components, accounting for nearly one quarter of the equipment investment. At present, domestic companies can not manufacture independently, so foreign companies have obtained a large number of monopoly profits. It is learned that the procurement of imported valves for Ling'ao phase II nuclear power plant alone reached US $70million, and the domestic procurement volume was less than 4%
the situation of nuclear power construction importing a large number of foreign key parts is far more than pump and valve products. According to zhangguobao, deputy director of the national development and Reform Commission, he once suggested the use of domestic control systems when visiting domestic nuclear power companies, but generally speaking, no one dared to use domestic control systems
in an interview not long ago, caiweici, vice president of China Machinery Industry Federation, introduced the situation that key parts and materials in the fifth feature field of other major technical equipment were controlled by others
the annual output of our power generation equipment has exceeded 100million kW, but in fact, the import volume of high-temperature and high-pressure pipes used in power generation equipment is quite large. Although the output of our power generation equipment has jumped from more than 10million kilowatts per year in the past to more than 100million kilowatts now, look carefully. High quality pipes and plates with high temperature and high pressure resistance for supercritical and ultra supercritical units must be imported
rolling mills have been made in China. However, although it is a domestic assembly, many electrical components or control systems inside are imported
domestic enterprises have also made achievements in EHV and UHV power transmission and transformation equipment, but users are not particularly confident about domestic products because of the operating mechanism inside, Therefore, the operator is required to adjust the condenser to the center of the field of vision (most of the research microscopes you can use must do this. The production must cooperate with foreign countries, or simply use foreign ones.
the transformer has been made, but users are not at ease about the bushing inside the UHV Transformer. Although some equipment manufacturing enterprises claim that they can do it themselves, users can never vote of confidence.
the development of functional components and CNC systems in the machine tool industry lags behind, and has become a CNC machine tool industry The bottleneck of industrial development. In particular, the development of supporting key functional components and CNC systems that restrict the level of high-end CNC machine tools is even slower. Cai Weici listed the current situation in five areas
zhangguobao's words also confirm caiweici's statement: although some products are manufactured domestically, they lack the ability of independent design and manufacturing and do not master the core technology. For most equipment products, although China has basically achieved autonomy, there is still a gap between the reliability and energy consumption indicators and the advanced level of foreign countries
in fact, it is understood that domestic enterprises, such as large pumped storage units and heavy gas turbines, do not master the core technology. In addition, the development of some products is still blank, such as deepwater offshore oil engineering equipment products, large civil aircraft, etc
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