Major product "burst valve for nuclear power plant" product prototype passed the appraisal

[China Instrument Network Instrument R&D] On February 3, 2018, a major project of pressurized water reactors jointly developed by Shanghai Nuclear Engineering Research and Design Institute, Dalian Dagao Valve Co., Ltd. and China Institute of Engineering Physics, was used for nuclear power plants. "Bursting valve" product prototype passed the appraisal jointly organized by China Machinery Industry Federation and China General Machinery Industry Association.

The appraisal committee consists of 13 experts from China National Nuclear Corporation, China National Nuclear Power Corporation, the National Nuclear and Radiation Safety Center of the Ministry of Environmental Protection, Dalian University of Technology and Nanjing University of Science and Technology, including Academician Ye Qichen and Academician Cheng Yidong. The Ministry of Science and Technology, the Energy Bureau, and representatives of local governments, employers, R&D units, and related personnel attended expert product appraisal meetings.

The appraisal committee unanimously held that the prototype of the blast valve product developed was successful, with complete independent intellectual property rights, filling the gaps in the domestic market and occupying the leading international level, and can be promoted and applied at nuclear power plants.

China's first self-developed explosives valve and its series of the world's largest specifications (DN450) have many innovative features: the key components - cartridge drive device, can operate reliably under harsh environment conditions such as high temperature, high humidity, and high radiation of nuclear power; Established advanced methods for calculating ballistic trajectory for blasting valves and dynamic simulation analysis methods for complete machines and key components; independently developed blasting valve graphite sealing structure and piston dynamic sealing structure to ensure the realization of valve safety functions; and overcoming the forging of shear caps. Process to ensure shear cover material properties.

The achievement of scientific and technological achievements in the "burst valve for nuclear power plants" is a manifestation of the nation's overall strength, a model of deep integration of military and civilians, a breakthrough in the battle for the domestic nuclear power industry and a standard achievement in the autonomy of key equipment for nuclear power. It is also an advanced nuclear power system in China. "Going out" made a contribution.

(Original title: Significant special "burst valve for nuclear power plant" product prototype passed the appraisal)