	US 12,275,197 B2
	Device and method for forming V-shaped full-composite pressure vessel
Jianguo Liang, Taiyuan (CN); Qingxue Huang, Taiyuan (CN); Zemin Ning, Taiyuan (CN); Yuqin Xue, Taiyuan (CN); Zhaotun Jia, Taiyuan (CN); Jianglin Liu, Taiyuan (CN); Yujie Duan, Taiyuan (CN); Hui Li, Taiyuan (CN); Lianyun Jiang, Taiyuan (CN); and Zhi Li, Taiyuan (CN)
Assigned to TAIYUAN UNIVERSITY OF TECHNOLOGY, Taiyuan (CN)
Filed by Taiyuan University of Technology, Taiyuan (CN)
Filed on Aug. 7, 2024, as Appl. No. 18/796,627.
Claims priority of application No. 202311084666.5 (CN), filed on Aug. 28, 2023.
Prior Publication US 2025/0074012 A1, Mar. 6, 2025
Int. Cl. B29C 70/32 (2006.01); B29C 53/56 (2006.01); B29C 53/80 (2006.01); B29C 70/34 (2006.01); B29L 31/00 (2006.01)

CPC B29C 70/32 (2013.01) [B29C 53/56 (2013.01); B29C 53/80 (2013.01); B29C 70/342 (2013.01); B29L 2031/7156 (2013.01)]

9 Claims

1. A method for forming a type-V full-composite pressure vessel, using a molding device that includes a half-cylinder body mold in which:

a length of a cylinder body part of the half-cylinder body mold is half of a length of a cylinder body of the type-V full-composite pressure vessel;

a groove for placing a valve seat is reserved at one end of a dome part of the half-cylinder body mold, and a fiber yarn-dividing ring is mounted at the other end;

the half-cylinder body mold is connected to the valve seat through a spline; and

the valve seat and the fiber yarn-dividing ring are in threaded connection with a rotating shaft of fiber winding equipment;

the method comprising the following steps:

S100: processing the half-cylinder body mold and the fiber yarn-dividing ring according to a structure size of the type-V full-composite pressure vessel, and connecting the half-cylinder body mold and the fiber yarn-dividing ring;

S200: placing the valve seat in the groove of a dome of the half-cylinder body mold, respectively fixing the valve seat and the fiber yarn-dividing ring on the rotating shaft, spray-coating a surface of the half-cylinder body mold with a releasing agent, and winding a composite material thin layer through the fiber winding equipment;

S300: putting the half-cylinder body mold and the composite material thin layer into curing equipment to perform composite material curing, and taking down the valve seat and a cured half-cylinder body composite material thin layer after a composite material is cured;

S400: repeating the steps S200 and S300, processing another half-cylinder body composite material thin layer, and spraying-coating inner walls of the two half-cylinder body composite material thin layers respectively with anti-corrosive and impermeable coatings;

S500: connecting the two half-cylinder body composite material thin layers to form a full-cylinder body composite material thin layer; and

S600: performing full fiber winding and composite material curing on the full-cylinder body composite material thin layer to finally obtain the type-V full-composite pressure vessel.