Reporter learned from the Institute of Chemical Materials, Chinese Academy of Engineering Physics, by our own research and development, a diameter of 450 mm of the world's largest caliber burst valve, the successful completion of the hot state valve test recently, which also marks the CAP series of third-generation nuclear power plant with all burst valve Through the identification.
It belongs to the unique safety device of the third generation pressurized water nuclear power station and is one of the most difficult key technologies in the CAP series of nuclear power plants developed independently in China.It can open the valve to trigger the blasting unit when the nuclear power station encounters a serious accident and generate high pressure gas Promote the valve to achieve passive pressure relief, and ultimately to the reactor cooling water cooling core, so as to effectively mitigate and prevent serious accidents, to ensure the safety of nuclear power plants.
Xi Yan, deputy director of the Institute of Materials, project manager Xianyan said blasting valve by the cartridge drive and valve body composed of two parts, this carried out the hot state valve open test is to verify the reliability of the key steps, That is verified burst valve in the pipeline under the conditions of high temperature steam pressure, the normal operation of the cartridge drive and the ability to open the valve function.
The valve actuation device used in the valve-opening test was successfully developed by Zhongyuan Institute of Chemical Materials for 6 years and has completely independent intellectual property rights.During the period, the institute gave full play to its accumulation of core technologies in the field of explosives and explosives, The selection and verification of the chemical agent adopts a brand new approach. In terms of the structure and parameter matching design of the valve body and the driving device of the bursting valve, a number of innovations have been carried out through simulation calculation and independent design, etc. At the same time, through the research and development of military and civilian cooperation, And Dalian Dagao Valve Co., Ltd., Shanghai Institute of Nuclear Engineering and other units to jointly achieve the blasting valve principle prototype research, engineering prototype design and many other technological breakthroughs, has formed with independent intellectual property rights of China's nuclear power plant blasting valve full set of technology.
