Recently, valve manufacturers and thermal power plants and design institutes in China have accelerated the pace of localization of key ultra (ultra) critical thermal power valves.

After the National Development and Reform Commission (NDRC) successfully held the nationalization start-up meeting of ultra (ultra) critical thermal power valves on September 13, 2010, the leaders of China Huaneng, Guodian, Huadian, Datang and China Electric Power Investment Group and China General Machinery Industry Association coordinated with each other. Henan Kaifeng high-pressure valves, Hadian valves, Dagao valves, Zhongkai Su valves, Shanghai valves, Huaxia valves, Nantong Electric Power Company Station valves, Shengshi valves, Beijing valves and other valve enterprises jointly discuss and formulate the localization plan of conventional thermal power station valves, negotiate joint tackling key problems, and actively cooperate with owners, planning and design institutes and main engine factories to jointly promote the localization of conventional thermal power valves.

From November 22 to 26, 2010, the State Energy Administration hosted the first working meeting on localization of key valves for ultra (ultra) critical thermal power units in Beijing. More than 70 people attended the meeting, including National Energy Administration, Machinery Industry Federation, Valve Association, Valve User Unit, Host Plant of Thermal Power Equipment, Design Unit of Thermal Power Plant Construction Project and Valve Manufacturing Enterprise. The meeting discussed the existing performance of the valve enterprise order intention and valve products joint tackling key issues.

Then the State Energy Administration asked the valve association to organize relevant valve manufacturing enterprises to participate in the second stage work coordination meeting of the nationalization of key valves for 1000MW ultra-critical thermal power units in Beijing, Nanjing, Chongqing and Zhengzhou from December 14 to 25, 2010, aiming at Jiangsu Huaneng Nantong Power Plant, Jiangsu Guodian Nantong Power Plant, Jiangsu Huadian Jurong Power Plant and Henan Datang Sanmenxia. The demonstration projects of power plant, Chongqing Zhongdian Shuanghuai Power Plant and Henan Huarun Jiaozuo Longyuan Power Plant were discussed and docked. The purchase list of the first type valves was discussed and determined. The draft joint R&D project and joint R&D agreement of the second type valves were negotiated. The main engine plant, Design Institute and owner units collated and provided the list of the first type valves and the related technical specifications of the second type valves. Book. The signing meeting of the joint research and development agreement for key valves of 2X1000MW ultra (ultra) critical thermal power unit in Nantong Power Plant was held in Beijing on January 27, 2011. Huaneng Group, Shanghai Electric Group Co., Ltd., Nantong Power Plant in Jiangsu Province, East China Power Design Institute, Harbin Power Station valves, Kaifeng high-pressure valves in Henan Province, Huaxia valves, Zhongnu Su valves, Shanghai Valve Factory, Dalian University Leaders of high valves, Beijing Valve General Plant, Shangyi Automation Instrument Factory 7, Chengdu Wind Valve, Nantong Power Station Valve and other related technical leaders attended the meeting. This paper mainly discusses the technical specifications of key valves for the newly built 2X1000MW ultra (ultra) critical thermal power unit in Nantong Power Plant, Jiangsu Province, and the joint R&D agreement signed by the valve manufacturer and the thermal power plant and design institute. The difficulties that may be encountered in the development of related products are analyzed and studied, and a consensus is reached. The key valves involved in research and development include main steam gate valves, high exhaust and exhaust check valves, high three-way valves and some control valves.

The goal of localization of thermal power valves is to achieve localization of most valves by tackling key problems for 2 to 3 years, with the localization rate reaching more than 85%. Aiming at the material, structure and stress analysis, key components research and test technology of ultra (ultra) critical valves, the key problems of different valves are listed respectively, which are solved by the task-taking units with self-financing in advance. An expert group composed of experts from industry associations, manufacturing enterprises and design institutes shall be established to examine the localization design scheme, study the major technical problems in tackling key problems and organize product identification. The state gives support to the cost of the localization of ultra-supercritical valves in science and technology.