US 2026/0185662 A1Published application

Underground Gas Storage Device for Compressed Air Energy Storage and Construction Method Thereof

AssigneeShanghai Investigation, Design & Research Institute Co., Ltd.

InventorsRui WEN, Lei GUO, Yujie TANG, Fangyong ZHANG, Yujun MA, Jiadeng LIANG, Yongqi DAI, Lin ZHAO, Ming MENG

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Abstract

An underground gas storage device includes an underground gas storage chamber, which is formed by multiple segments. A connecting passage is provided between two non-adjacent segments. On the outer top wall of the connecting passage is a shaft. At the intersection of the shaft and the connecting passage is a sealing plug. An inlet pipe and an outlet pipe are provided within the shaft. An outer bottom wall of the connecting passage is provided with a sump. A first drainage ditch is arranged along the circumference of the top edge of the sealing plug. The first drainage ditch communicates with the sump. On the outer surface of the segments is a drainage blind pipe assembly. The drainage blind pipe assembly communicates with the sump. The present invention allows for excavation in one go, reducing construction difficulty, and effectively minimizes the impact of groundwater on the underground gas storage chamber.

Claims10

Dependent claims

An underground gas storage device for compressed air energy storage, comprising an underground gas storage chamber (1) embedded in surrounding underground rock,

wherein the underground gas storage chamber (1) includes multiple sequentially connected underground-gas-storage-chamber segments (101),
wherein a connecting passage (2) is provided between two non-adjacent underground-gas-storage-chamber segments (101), a shaft (3) is provided on an outer top wall of the connecting passage (2), and a sealing plug (4) is provided at the intersection of the shaft (3) and the connecting passage (2),
wherein an inlet pipe (5) and an outlet pipe (6) are provided within the shaft (3), and lower ends of the inlet pipe (5) and the outlet pipe (6) both pass through the sealing plug (4) and connect to the connecting passage (2),
wherein a sump (7) is provided at an outer bottom wall of the connecting passage (2),
wherein a first drainage ditch (8) is provided along the circumference of a top edge of the sealing plug (4) within the shaft (3), and the first drainage ditch (8) is connected to the sump (7) via a first drainage pipe (9),
wherein a drainage blind pipe assembly is provided on an outer surface of the underground-gas-storage-chamber segments (101), and the drainage blind pipe assembly is connected to the sump (7) via a second drainage ditch (10) provided at the outer bottom wall of the connecting passage (2).

3 more elements

Dependencies are inferred from the claim text.