The most popular nuclear power development in Chin

2022-07-27
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The successful development of "choke point" equipment for China's nuclear power development has finally broken the bottleneck of key nuclear power valves.

the pilot operated safety valve for the pressurizer of nuclear power plant is very important to ensure the safe operation of the reactor. It is recognized as the most difficult equipment for localization among nuclear grade valves, and it is also the "choke point" key equipment on the road of "going global" of China's nuclear power

the pilot operated safety valve of the nuclear power plant pressurizer is very important to ensure the safe operation of the reactor. It is recognized as the equipment with the greatest difficulty in localization among the nuclear grade valves, and it is also the key equipment "stuck" on the road of "going global" of China's nuclear power. On April 11, the pilot safety valve prototype of Hualong No.1 pressurizer independently developed by China Nuclear Power Institute of China Nuclear Power Corporation successfully completed the full displacement hot action performance test, and its performance reached the latest technical requirements of the third generation nuclear power, which means that China Nuclear Power Corporation successfully broke the foreign monopoly, broke through the bottleneck of key nuclear power valves, and further improved the core competitiveness of China's nuclear power "going global"

at the acceptance appraisal meeting on the same day, experts from China Nuclear Energy Industry Association, China General Machinery Industry Association, nuclear and radiation safety center of the Ministry of environmental protection, China Nuclear Power Group, China Guangdong Nuclear Power Group and Dalian Dagao Valve Co., Ltd. agreed that the successful development of the pilot safety valve for the pressurizer of the nuclear power plant can not only realize the localization of the pilot safety valve for the pressurizer of the primary coolant system, At the same time, its core technology can provide technical support for the development of pilot operated safety valves for technical parameters of other systems, such as waste heat removal system, chemical and volume control system; Pilot operated safety valve technology can be widely used in the third generation nuclear power plants including Hualong 1

it is understood that among all the nuclear power plants in service and under construction in China, the first powerful data processing function of the pressurizer pilot safety valves are all imported, and the foreign countries also implement the prohibition policy for the pressurizer pilot safety valves required by the export projects of China's nuclear power units

in this regard, CNNC group has specially carried out the development project and industrialization planning for this type of safety valve. The project officially started in 2016 and was listed in the "Longteng 2020 scientific and technological innovation plan" of CNNC group in 2017. At the same time, as one of the pilot projects of the product R & D Manager System of CNNC, the project has appointed the product manager and deputy manager to carry out the full life cycle management of the pilot safety valve, a major scientific research product, and promote the transformation of scientific research products to the market

the pilot safety valve of Hualong No.1 pressurizer is a valve group system composed of pilot valve, main valve, solenoid valve and other valves. From the beginning of the project, the R & D team has determined the goal that all technologies adopted have independent intellectual property rights and all parts/components are supplied independently, so as to ensure that the equipment can be 100% localized and no longer be controlled by others in the international competition

the development of pilot operated safety valve for pressurizer in nuclear power plant originated from the existing technology of China Nuclear Power Institute. The pilot operated safety valve of small and medium displacement pressurizer of China Nuclear Power Institute was successfully developed in the 1980s. It has experienced the development from single work with high elongation to multi-function, small displacement to large displacement by consulting the manufacturer for testing. It has also gained rich experience in research, design, test and small batch manufacturing. (Zhengke, yuanshengyi)

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