US 11,988,333 B2
Bladder-type pressure tank and preparation method thereof
Guangpu Lyu, Xi'an (CN); Lijun Zhang, Xi'an (CN); Zeqiang Du, Xi'an (CN); Chaogang Zhang, Xi'an (CN); Liang Hu, Xi'an (CN); Hongshang Liu, Xi'an (CN); Xiangrong Du, Xi'an (CN); and Dongshuang Li, Xi'an (CN)
Assigned to XI'AN SUNWARD AEROMAT CO., LTD., Xi'an (CN)
Filed by Xi'an Sunward Aeromat Co., Ltd., Xi'an (CN)
Filed on Sep. 14, 2022, as Appl. No. 17/945,061.
Application 17/945,061 is a continuation in part of application No. PCT/CN2021/124987, filed on Oct. 20, 2021.
Prior Publication US 2023/0003343 A1, Jan. 5, 2023
Int. Cl. F17C 1/16 (2006.01); B29D 22/00 (2006.01); E03B 11/08 (2006.01); B29K 75/00 (2006.01); B29K 623/00 (2006.01); B29K 709/08 (2006.01)
CPC F17C 1/16 (2013.01) [B29D 22/003 (2013.01); E03B 11/08 (2013.01); B29K 2075/00 (2013.01); B29K 2623/06 (2013.01); B29K 2709/08 (2013.01); F17C 2201/018 (2013.01); F17C 2201/032 (2013.01); F17C 2203/0604 (2013.01); F17C 2203/0621 (2013.01); F17C 2203/066 (2013.01); F17C 2205/0103 (2013.01); F17C 2209/2127 (2013.01); F17C 2223/035 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A bladder-type pressure tank, comprising:
an outer shell;
a bladder;
a nozzle;
an elbow pipe; and
a saddle support;
wherein:
the outer shell comprises a liner and a glass-fiber layer covering an outer surface of the liner; the liner comprises polyethylene (PE); the liner further comprises a chamber, a first opening, and a second opening;
the bladder is disposed in the chamber; in an inflated state of the bladder, a gap is formed between the inflated bladder and an inner surface of the liner; and the bladder comprises polyurethane (PU);
the nozzle is integrated with the bladder, and is disposed in the first opening and seals the first opening;
the elbow pipe comprises a first end and a second end; the first end of the elbow pipe is disposed in the second opening and communicates with the chamber; and the second end of the elbow pipe is configured to connect to a pipeline;
a fixing column is integrated with the bladder; the first end of the elbow pipe comprises a fixing plate; and the fixing column is fixedly disposed through the fixing plate; and
the first opening is disposed in a top part of the liner; the second opening is disposed in a bottom part of the liner; and the saddle support is fixedly disposed at a bottom portion of the outer shell to support the outer shell.