"Preparation of nuclear pumps, valves, electrical equipment and measuring instruments" pre-accepted

[China Instrument Network Instrument R&D] From December 23 to 24, 2017, the Shanghai Nuclear Engineering Research and Design Institute took the lead, and the United Nations Nuclear Auto System Engineering Co., Ltd. (hereinafter referred to as “CNS”) implemented a large-scale advanced pressure. The major special project of the water reactor, “Development of Nuclear Pumps, Valves, Electrical Equipment and Measuring Instruments”, successfully passed the pre-acceptance inspection of the major special office of the State Power Investment Corporation.

Acceptance expert group consists of China Machinery Industry Federation, China General Machinery Association, Nuclear and Radiation Safety Center of Ministry of Environmental Protection, China National Nuclear Industry Corporation, China General Nuclear Power Engineering Design Co., Ltd., Shanghai Jiaotong University, Beijing Institute of Technology, General Iron and Steel Research Institute, Chinese Academy of Sciences and other units. Of 19 experts.

The expert group unanimously held that: the documents provided by the research team were complete and complete, and the contents were informative and in line with the pre-acceptance requirements. The research team mastered the key manufacturing and test verification technologies, completed the research contents specified in the task contract, and reached the task contract. The stated objectives and assessment indicators have enabled the autonomy and localization of the equipment. The implementation of the project adopted a combination of production, education and research, formed a complete supply base and a re-innovation base, ensured the achievement of the objectives, and cultivated a talented team of designing, manufacturing, testing, and identifying the entire industry chain.

Waste heat pump

The normal residual heat pump is the only nuclear pump except the main pump of the CAP series pressurized water reactor nuclear power plant. The successful development of this pump overcomes the key technologies of the high resistance to cavitation performance hydraulic model and medium inclusion air operation, solves the lubrication and cooling problems of thrust bearings and super long guide bearings, and passes the performance assessment of basic type tests. Passed the test of thermal test, thermal shock test, air filling test, impurity test and other harsh test conditions. It has the advantages of low noise, low vibration and high operational reliability. In 2014, it passed the appraisal of China Machine Design Corporation and its products reached international standards. The same advanced level and applied to CAP1400 demonstration project and CAP1000 Xu Dabao project.

CVS supplement water pump

The CVS make-up pump is a high-lift, low-flow, double-body horizontal multi-stage centrifugal pump. The successful development of this pump overcomes the key technology of the high-lift, low-flow hydraulic model under the condition of 3000 rpm, and solves the problem of flow path arrangement, thrust bearing selection, and guide bearing lubrication and cooling in the structural design, and has passed the basic type test. The performance appraisal also passed the test of severe test conditions such as variable condition test, durability test, and impurity test. It has the advantages of low noise, low vibration, high operational reliability, etc. It has reached the international advanced level of the same kind and applied to CAP1400 demonstration project and CAP1000 Xu Dabao project.

Burst valve

The development of the CAP series blasting valve has undergone several major stages including the study of principle prototypes, engineering prototypes, engineering prototypes and test verifications, and engineering prototypes. It has overcome the internal ballistics analysis, dynamics simulation, and development of shear caps 690 alloys and medicines. The key technologies of the cylinder drive unit and the valve complete machine test and test, the cartridge drive device appraisal, the blast valve machine identification and other key technologies have successfully developed the world's largest size blast valve, the DN450 blasting valve, to form a series of blasting valve products. The CAP1400 blasting valve has completely adopted the domestically developed cartridge drive device and shear cover, and has completely independent intellectual property rights, which fills the gap in the domestic market and its performance has reached the international leading level. This result has been applied to the CAP1400 demonstration project.

Main steam isolation valve

The development of the main steam isolation valve has solved a series of structural design difficulties such as the low-impact fast clearance of the main steam isolation valve, seismic resistance, long life, and reliable sealing design, and has overcome a series of key manufacturing processes such as casting and processing of large-sized valve body castings. The problem has passed the verification of large-scale valve test and equipment appraisal assessment. It has the advantages of compact size, good circulation capacity, excellent seismic performance, long operating life, and high operational reliability. It fills the domestic gap and has reached the international advanced level. The result has been The application of nuclear power plants under construction has broken the long-term supply monopoly in foreign countries.

DC electric device

The development of DC electric devices completes the design, manufacture, testing and qualification of serialized products. It has innovatively developed a totally enclosed DC motor with protection class IP68; optimized commutator materials and insulation materials, improved resistance High temperature, radiation resistance and anti-seismic performance; Optimized stator insulation structure, improved high temperature and radiation resistance; The stroke control mechanism has self-cleaning function to ensure reliable on-off operation. This achievement has many innovations in design and technology, which fills the gap in domestic technology and reaches the international advanced level, and can meet the requirements for the use of CAP1400 and CAP1000 projects.

Main pump frequency converter

The main pump frequency converter is the frequency conversion adjustment device for the nuclear main pump. Through the implementation of the project, it solves the key technologies such as power unit water cooling, four-quadrant full power energy feedback, water-cooled transformer epoxy casting, frequency conversion/frequency synchronization and undisturbed switching and other key technologies. The EMC test, cooling system test, key component test, complete machine type test, and some other processes have passed the appraisal of China Machine Design Co., Ltd. in 2015, and the products have reached the international advanced level.

Radiation monitoring instrument

The on-line monitoring design of the radiation monitor has been completed, which has eliminated previous off-line sampling pumps and sampling loops, effectively simplifies the equipment, has the advantages of timely response, easy maintenance, and small space requirements, which is beneficial to the later equipment maintenance. , Reduced maintenance and operating costs, shortened the alarm response time, also solved the radiation monitoring application of the explosion-proof environment. The results have been applied in the construction of nuclear power. The domesticization of on-line radiation measurement instruments for nuclear power plants has been realized.

Off-site nuclear detection system

The out-of-core nuclear detection system measures the neutron fluence rate outside the reactor through a neutron detector located outside the reactor. The signal processing system outside the containment receives signals from the neutron detector such as pulses and currents. Converted to an adapted signal and sent to the protection system to provide the protection system with the power level and distribution information required for safety-related functions. Through special research and development, the weak signal processing methods for the detector materials, processing and integration processes and signal processing systems have been completed; the products have been tested and certified to meet the stringent identification conditions of the CAP1400 series. It solves technical difficulties such as long-distance transmission and matching of weak signals, anti-jamming of weak signals, and electromagnetic compatibility. The results have been applied in the construction of nuclear power.

This subject has been officially launched since January 2012 and lasted for more than five years. The nuclear engineering research institute of the United Nations nuclear nuclear instrument, Hunan Xiangdian Changsha Pump Factory Co., Ltd., Shanghai Apollo Machinery Manufacturing Co., Ltd., and Shanghai Kaiquan pump Industry (Group) Co., Ltd., Jiangsu Haishi Pump Manufacturing Co., Ltd., Dalian Deep Blue Pump Co., Ltd., China Nuclear Sohu Technology Industrial Co., Ltd., Dalian Dagao Valve Co., Ltd., Shanghai Valve Factory Co., Ltd., and Anshan Electromagnetic Valve Co., Ltd. Responsible company, Changzhou Power Plant Auxiliary Machinery Plant Co., Ltd., Yangzhou Power Equipment Repair Factory Co., Ltd., Shaanxi Institute of Applied Physical Chemistry, China Institute of Engineering Physics, Institute of Chemical Materials, Suzhou Neway Valve Co., Ltd., Harbin Power Station Valve Co., Ltd. , Zhejiang Sanfang Control Valve Co., Ltd., Shanghai Automation Instrumentation Co., Ltd. Automation Instrument Factory No.7, Shenyang Yuanda Power Electronics Technology Co., Ltd., Shanghai Yuzhang Electrical Complete Equipment Co., Ltd., Jiangsu Shangshang Cable Group Co., Ltd., Changzhou Yayi Cable Co., Ltd. Limited, Shanghai Electric Research institutes, China Nuclear Control System Engineering Co., Ltd., Ningbo Aosaki Automation Instrumentation Co., Ltd., Jiangsu Xinghe Valve Co., Ltd., Xi'an Nuclear Instrument Factory and other cooperative units have completed the localization and autonomy of nuclear pumps, valves, electrical equipment and measuring instruments. Mastered the key equipment manufacturing technology, formed a series of scientific research and technical reports, obtained a number of high-level technical achievements, applied for 80 patents (including 37 invention patents), and authorized 48 items (including 10 invention patents). Enhance the self-design, manufacturing, testing capability and industry level of domestic nuclear pumps, valves, electrical equipment and measuring instrument equipment, and realize the upgrade of products from the second generation to the third generation.

(Original title: Major special topic "Development of nuclear pumps, valves, electrical equipment and measuring instruments" through pre-acceptance)