Unit 4 of Zhejiang Huaneng Yuhuan Power Plant successfully passed the 168-hour test run and successfully put into operation. So far, the first set of four 1 million kilowatt ultra-supercritical thermal power unit boilers with the largest domestic single-unit capacity designed and manufactured by Harbin Boiler Factory Co., Ltd. has been completed and put into operation.
The successful completion of the Yuhuan project means that the domestic production of major equipment for the millions of kilowatts of ultra-supercritical units in China has been successfully developed. China's equipment manufacturing industry has entered a new stage of development; it also marks that the level of technical equipment and manufacturing capacity of the pot has reached the international advanced level. It is the first company to master the world's top boiler manufacturing technology.
It is reported that Huaneng Yuhuan Power Plant is the first power plant in China to build a single-million-kilowatt ultra-supercritical coal-fired unit. The project is a four-million-kilowatt ultra-supercritical unit. It is a national key project and a key national scientific and technological project for the 10th Five-Year Plan. The project supporting the project 863 “Ultra-supercritical coal-fired power generation technology†is the most advanced coal-fired generating unit in China and even in the world. From the commissioning of Unit 1 to the power generation of Unit 4, Haguo set a record of “four shots†in 12 months, creating the shortest record of the construction period of the one million kilowatt ultra-supercritical unit.
The 1 million kilowatt ultra-supercritical unit boiler of Huaneng Yuhuan Power Plant made by Haguo is the first domestically produced unit with the largest single unit capacity, the highest operating steam parameters, the highest technical content and the lowest coal consumption. The main technical indicators of the unit have reached the international advanced level. A number of "the best in the country".
For Harbin, the manufacture of Yuhuan million-kilowatt power station boiler is both an opportunity and the most severe test of the overall technical strength, manufacturing strength and corporate reputation. The biggest challenge in boiler manufacturing is the production of four-stage superheater outlet headers and main steam pipes made of SA-335P122 and P92. According to the welding materials, processes and equipment of the Japanese pot selected by the Japanese side, Japanese experts are at a loss. The pot broke the limitations of the original welding process and welding materials of the Japanese side. The submerged arc automatic welding process and welding materials were used. The average welding time of one weld was only about 12 hours for one person, and 15 days for two people. Compared with the welding process, the production efficiency is greatly improved, and 28 flaws are created for all the 100% UT and 100% RT inspections.
Yuhuan Power Plant's 4 million kilowatt ultra-supercritical boilers were successfully put into commercial operation, marking the success of the introduction, digestion and development of the technology. At present, Harbin is constantly improving and optimizing its product structure, implementing secondary development and independent innovation strategies, and building its own distinctive brand. It has successfully developed a 600,000 kW supercritical tower lignite boiler with independent intellectual property rights and the world's first 600,000. New products and technologies such as kilowatt supercritical W flame boiler and 600,000 kW vertical pipe supercritical boiler are among the first in the world.
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