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Evaluation of scientific and technological achievements by safety level solenoid valve project for nuclear power plant process system
[ Instrument Network Instrument Development ] On June 18, 2019, Zhongke Hechuang (Beijing) Science and Technology Achievement Evaluation Center organized an expert to hold a safety level solenoid valve for nuclear power plant process system completed in Anshan Solenoid Valve Co., Ltd. in Shenyang, Liaoning. "Project Science and Technology Achievement Evaluation Meeting.
The participating experts listened to the results of the unit's report on the results, reviewed the development report, inspection report, user application certificate and other information. After questioning and discussion, the evaluation opinions were formed as follows:
1. The evaluation materials provided are complete and standardized, and meet the requirements for evaluation of scientific and technological achievements.
2. The results include safety class 1, 2, and 3 solenoid valves, which meet the needs of nuclear power applications by using a number of proprietary technologies.
3. The main innovations of this achievement:
(1) Low leakage and long life rigid with compensation seat sealing technology: The automatic compensation function of the sealing mechanism is realized, which greatly improves the sealing performance and sealing reliability.
(2) Separate seal sub-structure and combined spool technology: Improve the influence of temperature change on sealing performance, avoid the grinding of the sealing surface of the valve body, realize the quick disassembly and assembly of the valve core assembly, and improve the maintainability.
(3) Multi-point magnetic valve position signal output technology: Through the multi-point acquisition of the valve position status signal, the accuracy and reliability of the output signal are improved.
(4) Internal screen insulation technology: The influence of high temperature medium on the electromagnetic drive mechanism is greatly reduced, and the service life of the electromagnetic drive mechanism is effectively improved.
The results have independent intellectual property rights, 2 patents for invention and 2 utility model patents. They have been applied to high-temperature gas-cooled reactors, second-generation improved, Hualong No.1 nuclear power units, and extended to AP1000 and CAP1400. Chemicalization and industrialization, breaking the foreign technical embargo and blockade, in line with national strategic needs, significant economic and social benefits. The comprehensive performance of this achievement has reached the international advanced level.
(Original title: Safety grade solenoid valve project for nuclear power plant process system passed the evaluation of scientific and technological achievements)