Development of blasting valve driving device for the largest nuclear power plant in the world


Learned from Chinese Academy of Engineering Physics, by the world's largest caliber blasting valve China's independent research and development, 450 mm caliber, before the date of successful completion of hot open test valve. This also marks the full identification of the blasting valves for the three generation nuclear power plant of the CAP series.


Blasting valve belongs to the third generation of pressurized water nuclear power plant special safety device, is one of the key technologies of CAP series high difficulty of China's independent research and development in nuclear power plant. It suffered a severe accident in the nuclear power station, by opening the valve trigger blasting unit, high pressure gas generated by pushing the valve, to achieve passive pressure relief, eventually to achieve the cooling water into the reactor core cooling, so as to effectively alleviate and prevent serious accidents, ensure the safety of nuclear power plants.


CAEP Materials Institute deputy director, project leader Xi Yan said, blasting valve is composed of a driving device and a cartridge valve body is composed of two parts, hot this time to carry out open valve test is a key step to verify the reliability of the valve blasting, blasting valve has the actual condition to verify the high temperature steam pressure in the pipe under the cartridge driving device normal function and ability to achieve open valve function.


The open cartridge valve test using the drive device by CAEP of material which lasted 6 years, successfully developed with independent intellectual property rights. During the full accumulation of military scientific research units of core technologies in explosives fields, with a new approach in the selection and verification of explosive, blasting in the valve body and the drive device structure and parameter matching design, simulation, design a more independent innovation. At the same time, through the development of civil military cooperation, the unit also with the Dalian high valve Limited by Share Ltd, Shanghai Institute of nuclear engineering, blasting valve together to achieve the principle prototype research, engineering prototype design technology has formed a number of breakthrough, China's nuclear power plant explosion valve with independent intellectual property rights of the full set of technology.