The Expert Appraisal Committee of China Machinery Industry Federation recently carried out the full-size safety valve and large-diameter gate valve for the steam and water supply shut-off valve, check valve, hydraulic test plugging valve and supercritical unit of the supercritical unit of Haguo Valve Co., Ltd. Product identification and technical identification. Experts agree that the design and manufacturing technology of the Haguo Supercritical Series valve is advanced, filling the domestic gap, and the performance has reached the international advanced level of similar products, which can replace imported products. At this point, the Haguo supercritical valve successfully passed the national appraisal, and the level of valve design and manufacturing in China has leapt to a new level.
In 2003, in the case of foreign technology blockade, Haguo Valve Company took the initiative to undertake the development of the supercritical thermal power unit valve of the National Development and Reform Commission, and in 2004, took out the first supercritical plugging valve in China, and in 2005 The Yuhuan million kilowatt ultra-supercritical unit is equipped with a stop valve and a check valve. Subsequently, the full-size safety valve and the large-diameter gate valve were successively tested successfully. At present, Haguo Valve Company has equipped more than 500 sets of supercritical steam and water supply shut-off valves, check valves and hydraulic test plugging valves for 28 supercritical unit boilers of 21 domestic power plants. The operation of the unit shows that the performance of this series of products is stable, and all the parameters of the indicators have met the design requirements, which has been fully recognized by users.
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