China National Nuclear Seventh Research and Design Institute has obtained a patent for vacuum control valves, which effectively prevents or reduces the risk of the valve core separating from the valve stem

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The Seventh Research and Design Institute of China National Nuclear Corporation has obtained a patent for a vacuum control valve, which effectively prevents or reduces the risk of the valve core coming loose from the valve stem. According to information from the Intellectual Property Office, dated March 24, 2025, the Seventh Research and Design Institute of China National Nuclear Corporation Ltd. has been granted a patent titled “A Vacuum Control Valve”; the authorization announcement number is CN 222650573 U, with the application date being May 2024. The patent abstract indicates that this application relates to the field of control valves, and provides a vacuum control valve comprising a valve body, a valve core, a valve stem, a fixing pin, and an actuator ； The valve core is located within the valve body; it features a mounting hole and a first pin hole, with the first thread being formed within the mounting hole ； The valve stem has a first connection end and a second connection end; the first connection end is equipped with a second thread and a second pin hole, with the second thread fitting together with the first thread ； The fixing pin passes through both the first pin hole and the second pin hole, and the direction of the central axis of the fixing pin intersects with the direction of the central axis of the valve stem ； The actuator is connected to the second end of the valve stem, allowing the actuator to drive the valve core through the valve stem in order to enable the vacuum control valve to regulate the system pressure. After the valve core and the valve stem are connected through the first thread and the second thread, a fixing pin is used to pass through the first pin hole and the second pin hole in order to further secure the connection between them, thereby effectively preventing or reducing the risk of the valve core and the valve stem coming apart. According to Tianyancha data, China Nuclear Seventh Research and Design Institute Co., Ltd. was established in 1994 and is located in Taiyuan; it is a company that operates in the field of professional technical services. The registered capital of the company is 110 million RMB. According to the big data analysis conducted by Tianyancha, China National Nuclear Seventh Research and Design Institute Co., Ltd. has made investments in 3 companies, participated in 3,818 bidding projects, and holds 235 patent records. In addition, the company possesses 30 administrative licenses.