Major special "nuclear pump, valve, electrical equipment and measuring instrument development" through pre acceptance

December 23, 2017 to 24, led by the Shanghai nuclear engineering research and Design Institute, the United Nations nuclear Automatic System Engineering Co. Ltd. (hereinafter referred to as "the country's nuclear automatic") joint implementation of large-scale advanced PWR major projects of nuclear power pump, valves, electrical equipment and instrumentation development project successfully passed the pre acceptance of state power investment group the company's major special office organization.

Acceptance of the expert group by Chinese Machinery Industry Federation, Chinese General Machinery Association, Ministry of environmental protection of nuclear and radiation safety center, Chinese nuclear industry group, China Guangdong Nuclear Power Engineering Co. Ltd, Shanghai Jiao Tong University, Beijing Institute of Technology, Chinese Academy of Sciences, Central Iron and Steel Research Institute and other units of the 19 experts.

Group of experts agreed that: the group to provide the documents are complete, informative, meet the pre acceptance requirements, the research group has mastered the key manufacturing and test verification technology, complete the research content of the contract stipulated task, to achieve the required task contract objectives and assessment indicators, realize the autonomy and domestic equipment. The implementation of the project has adopted the combination of production, teaching and research, forming a complete set of supply bases and re innovation base, ensuring the realization of the objectives of the project, and training talents in designing, manufacturing, testing and identifying the whole industry chain.

Residual heat removal pump

Normal residual heat removal pump CAP series of PWR nuclear power plant in addition to the main pump, nuclear pump only. The successful development of the pump, the capture of high anti cavitation performance of the hydraulic model and key technology of air medium inclusion operation, solves the problem of thrust bearing lubrication cooling and long water guide bearing, through the performance based test, also through thermal test, thermal shock test, test and test gas impurities the harsh conditions of the test, with low noise, small vibration, high reliability comprehensive advantages, 2014 by machine in conjunction with the results of the identification, the products reach the international advanced level of similar, and applied to CAP1400 and CAP1000 Xu Davao project demonstration project.


CVS water pump

CVS water pump belongs to the high head, low flow, double the horizontal multistage centrifugal pump. The successful development of the pump, to capture the key technology of high pressure and low flow hydraulic model 3000 rpm speed conditions, to solve the problem of flow, lubrication and cooling structure design of the thrust bearing and guide bearing, through the performance based test, also through the variable condition test, endurance test and impurity test harsh test condition test, with low noise, small vibration, high reliability comprehensive advantages, 2014 by machine in conjunction with the results of the identification, the products reach the international advanced level of similar, and applied to CAP1400 and CAP1000 Xu Davao project demonstration project.


Blasting valve

CA machine valve test, cartridge drive key technology device identification, identification of the blasting valve, successfully developed the world's largest --DN450 blasting blasting valve valve specifications, the formation of blast valve product series. CAP1400 explosion valve complete with the domestic self-developed cartridge drive device and shear cover, with completely independent intellectual property rights, to fill the domestic blank, the performance reached the international advanced level. The results have been applied to the CAP1400 demonstration project.


Main steam isolation valve

Research on the main steam isolation valve, solves the low impact of main steam isolation valve fast closing, earthquake resistance, long life, reliable sealing design and a series of structural design difficulties, overcome the large valve body casting casting and machining and a series of key manufacturing process problems, through the large valve test and equipment evaluation, has compact size, flow capacity, excellent seismic performance, long service life, high reliability and action comprehensive advantages, to fill the domestic blank, reached the international advanced level, has been to build nuclear power plants in the application, breaking the foreign monopoly supply long.


DC electric device

Development of DC electric device is designed, a series of product manufacturing, testing and identification, innovative research and development of DC motor closed structure, protection grade reaches IP68; the commutator material and insulation material optimization, improve the high temperature resistance, radiation resistance and seismic performance; the stator insulation structure optimization. To improve the high temperature resistance and radiation resistance; stroke control mechanism with self purification function, ensure reliable on-off action. This achievement has made many innovations in design and process. It fills the gap of domestic technology and reaches the international advanced level, which can meet the requirements of CAP1400 and CAP1000 projects.


Main pump inverter

Main pump inverter is variable frequency regulating device for nuclear main pump, through the implementation of the subject and solved the key technology of power unit water cooling, four quadrant power energy feedback, water-cooled transformer, variable frequency synchronous / epoxy pouring bumplesstransfer, and through the EMC test, the key components of cooling system test, test, type test machine such as, in 2015 through the machine in conjunction with the results of the identification, the products reach the international advanced level of similar.


Radiation monitoring instrument

Completed on-line monitoring design of radiation monitor, to avoid the previous sampling pump, off-line measurement sampling circuit device, effectively simplifies the equipment, with convenient maintenance, timely response, space requirements and other advantages, is conducive to the maintenance of equipment, reduce maintenance cost, shorten the response time of alarm. It solves the application problem of the explosion-proof environmental radiation monitoring. The results have been used in the construction of nuclear power. The localization of the on-line radiation measuring instruments for nuclear power stations has been realized.
External nuclear testing system

Pile nuclear measurement system by neutron detector distribution in the reactor the neutron fluence rate measurements outside the reactor, the signal processing system located outside of the containment, receives the pulse current from the neutron detector signal, converts the signal sent to the adaptive protection system, provide safety related functions required the power level and distribution of information protection system. Through the thematic development, we completed the research of weak signal processing methods of detector material, processing and integration process and signal processing system. The products were tested and identified to meet the stringent identification conditions of CAP1400 series. The technical difficulties such as long distance transmission and matching of weak signals, anti-interference and electromagnetic compatibility of weak signals are solved. The results have been used in the construction of nuclear power.


Since this project was officially approved in January 2012 began, which lasted more than 5 years of efforts, the United Nations Shanghai nuclear engineering research and Design Institute of Hunan, Hunan Electric Changsha nuclear Automatic Pump Factory Co. Ltd., Shanghai Apollo Machinery Manufacturing Co. Ltd., Shanghai Stephen Pump (Group) Co., Ltd., Jiangsu Haishi pump manufacturing Co Ltd, Dalian Shenlan Pump Co. the company, Sufa technology industry Limited by Share Ltd, Dalian high valve Limited by Share Ltd, Limited by Share Ltd Shanghai valve factory, Anshan valve limited liability company, Changzhou Power Station Auxiliary Equipment Factory Ltd., Yangzhou Power Equipment Manufactory Co. Ltd., Shaanxi Institute of Applied Physics and chemistry, China Academy of Engineering Physics Institute, Limited by Share Ltd, Suzhou Neway valve Harbin Power Station Valve Co. Ltd., Zhejiang three party control valve Co. Ltd., Shanghai automation instrumentation automation instrument factory, seven Limited by Share Ltd Shenyang Yuanda Power Electronic Technology Co. Ltd., Shanghai Yu chapter Electric Equipment Co., Ltd. and Jiangsu on Cable Group Co. Ltd., Changzhou eight Limited by Share Ltd, Shanghai Yi Cable Cable Research Institute, nuclear control system engineering Co. Ltd, Ningbo auqi Automatic Equipment Co., Ltd. instrument Jiangsu Xinghe Valve Co. Ltd., Xi'an nuclear instrument factory and other partners, the nuclear power pumps, valves, electrical equipment and instrumentation of the localization and autonomy, mastered the key equipment manufacturing technology, has formed a series of scientific and technical reports, achieved a high level of technology, applied for 80 patents (of which 37 patents), has authorized 48 (including 10 invention patents), enhance the domestic nuclear power valve, pump The independent design, manufacturing, testing ability and industrial level of electrical equipment and measuring instrument equipment have achieved the upgrading of the products from the two to the three generation.