China Chengda Engineering Co., Ltd. has applied for a patent titled “A Large-scale Liquid Hydrogen Combined Storage Tank with Low Evaporation Rate”

Thread Content

According to news from January 24, 2025, **information from the Intellectual Property Office shows that China Chengda Engineering Co., Ltd. has filed a patent application for a device named “A large-scale liquid hydrogen storage tank with low evaporation rate,” with the publication number CN 119333724 A; the application was submitted in November 2024.** The patent abstract indicates that this invention discloses a large-scale liquid hydrogen storage tank with a low evaporation rate, belonging to the fields of chemical engineering and new energy technologies. It includes a vertical storage tank as well as a double-layer hydrogen storage sphere tank located inside the vertical storage tank; the double-layer hydrogen storage sphere tank comprises insulation material for the sphere tank, which is filled within the vacuum chamber formed by the inner and outer tank shells ； There is a combined space gap between the outer wall of the double-layer hydrogen storage sphere tank and the inner wall of the vertical tank; this combined space gap is filled with insulating material. The present invention adopts a configuration in which the double-layer hydrogen storage sphere tank is placed inside the vertical tank, with a certain distance separating the outer tank of the double-layer hydrogen storage sphere tank from the inner wall of the vertical tank, thus creating a combined space. Based on the insulation material for spherical tanks, adding spatial insulation material enhances the dual-insulation approach, which can significantly reduce the evaporation rate of liquid hydrogen. According to Tianyancha data, China Chengda Engineering Co., Ltd., established in 1988 and headquartered in Chengdu, is a company primarily engaged in the civil engineering construction industry. The registered capital of the enterprise is 2 billion RMB, and the paid-in capital is also 2 billion RMB. According to the big data analysis provided by Tianyancha, China Chengda Engineering Co., Ltd. has made investments in 10 companies in total, participated in 5,000 bidding projects. In terms of intellectual property, it holds 2 trademark registrations and 620 patent registrations; furthermore, the company possesses 20 administrative licenses.