Title:
GRAVITY-COMPRESSED AIR ENERGY STORAGE SYSTEM AND WORKING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/143349
Kind Code:
A1
Abstract:
Disclosed are a gravity-compressed air energy storage system and a working method therefor, belonging to the technical field of energy storage. The system comprises an air compression unit (1), an air expansion unit (2), an air storage chamber (6), a weight (7) and an electric generator (9), wherein an inlet of the air compression unit (1) is connected to an air intake device, an outlet of the air compression unit (1) is connected to an inlet of the air storage chamber (6) by means of an energy storage pipe, an outlet of the air storage chamber (6) is connected to an inlet of the air expansion unit (2) by means of an energy release pipe, and an outlet of the air expansion unit (2) is connected to the electric generator (9); a heat exchange unit is arranged between the energy storage pipe and the energy release pipe; and the weight (7) is arranged on the upper portion of the air storage chamber (6) and forms a piston-air cylinder system with the air storage chamber (6), and a sealing device (8) is arranged between the weight (7) and the air storage chamber (6). The system combines compressed air energy storage with gravity energy storage, and has the advantage of the compressed air energy storage, i.e. a high energy density, and the advantage of the gravity energy storage, i.e. flexible arrangement.
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Inventors:
WEN JUN (CN)
XU RUOCHEN (CN)
PEI JIE (CN)
LU JI (CN)
CAO XI (CN)
LIU MINGYI (CN)
ZHU YONG (CN)
CAO CHUAN ZHAO (CN)
ZHU LIANJUN (CN)
ZHENG JIANTAO (CN)
LI QING (CN)
XU YUE (CN)
XU RUOCHEN (CN)
PEI JIE (CN)
LU JI (CN)
CAO XI (CN)
LIU MINGYI (CN)
ZHU YONG (CN)
CAO CHUAN ZHAO (CN)
ZHU LIANJUN (CN)
ZHENG JIANTAO (CN)
LI QING (CN)
XU YUE (CN)
Application Number:
PCT/CN2020/130202
Publication Date:
July 22, 2021
Filing Date:
November 19, 2020
Export Citation:
Assignee:
CHINA HUANENG GROUP CO LTD (CN)
HUANENG CLEAN ENERGY RES INST (CN)
HUANENG CLEAN ENERGY RES INST (CN)
International Classes:
F03G3/00; F01K7/02; F01K13/00; F01K21/00; F01K27/00
Foreign References:
| CN111237144A | 2020-06-05 | |||
| CN211370627U | 2020-08-28 | |||
| CN107559054A | 2018-01-09 | |||
| CN103352830A | 2013-10-16 | |||
| CN108953099A | 2018-12-07 | |||
| CN107489467A | 2017-12-19 | |||
| CN107842485A | 2018-03-27 | |||
| CN106014640A | 2016-10-12 | |||
| CN107905985A | 2018-04-13 | |||
| EP2203967B1 | 2017-05-03 |
Attorney, Agent or Firm:
XI'AN TONG DA PATENT AGENCY CO., LTD. (CN)
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