Large deformation underground energy storage device

Patent metadata

Field	Value
Publication number	US-2025058973-A1
Application number	US-202318506403-A
Country	US
Kind code	A1
Filing date	Nov 10, 2023
Priority date	Aug 14, 2023
Publication date	Feb 20, 2025
Grant date	—

Abstract

The disclosure belongs to the field of underground energy storage, and particularly provides a large-deformation underground energy storage device, including a body. The body includes a rubber sealing layer, a negative Poisson's ratio material layer, a large deformation concrete layer and rock layers sequentially nested from inside to outside; an internal storage space is formed in the rubber sealing layer, the negative Poisson's ratio material layer includes a plurality of negative Poisson's ratio material elements connected in sequence, and the large deformation concrete layer is cast from deformable concrete.

First claim

What is claimed is:

1 . A large deformation underground energy storage device, comprising a body, wherein the body comprises a rubber sealing layer, a negative Poisson's ratio material layer, a large deformation concrete layer and rock layers sequentially nested from inside to outside; an internal storage space is formed in the rubber sealing layer, the negative Poisson's ratio material layer comprises a plurality of negative Poisson's ratio material elements connected in sequence, and the large deformation concrete layer is cast from deformable concrete.

2 . The large deformation underground energy storage device according to claim 1 , wherein the rock layers comprise a primary rock layer connected with the large deformation concrete layer and a secondary rock layer located outside the primary rock layer.

3 . The large deformation underground energy storage device according to claim 2 , wherein an annular conduit is nested between the primary rock layer and the secondary rock layer, and the annular conduit is communicated into the rubber sealing layer through a conduit, and a one-way pressure pump is arranged in a middle part of the conduit.

4 . The large deformation underground energy storage device according to claim 3 , wherein the one-way pressure pump comprises a one-way pressure pump housing, and a one-way pressure pump cavity is formed in the one-way pressure pump housing; one end of the one-way pressure pump cavity is connected with the conduit, and an other end of the one-way pressure pump cavity is connected with the annular conduit; a first one-way valve is arranged at a position of the one-way pressure pump cavity being connected with the conduit, and a second one-way valve is arranged on one side of a position of the one-way pressure pump cavity being connected with the annular conduit, and a piston rubber body is movably connected in the one-way pressure pump cavity.

5 . The large deformation underground energy storage device according to claim 4 , wherein the piston rubber body is connected with a precession screw through a threaded rod.

6 . The large deformation underground energy storage device according to claim 3 , further comprising a water depth gauge inside the rubber sealing layer, wherein the water depth gauge comprises a water depth gauge housing and a water depth gauge cavity; a signal antenna is fixed inside the water depth gauge cavity, and two ends of the signal antenna are respectively connected to an inner surface and an outer surface of the water depth gauge housing through wires, and the water depth gauge housing is made of a piezoelectric material.

7 . The large deformation underground energy storage device according to claim 6 , wherein two sides of the water depth gauge housing are oval, and an outline dimension of one side is larger than that of an other side.

8 . The large deformation underground energy storage device according to claim 3 , wherein a plurality of rigid gaskets for supporting the annular conduit are arranged in the primary rock layer, and the plurality of rigid gaskets are uniformly distributed along an inner circumferential direction of the annular conduit.

9 . The large deformation underground energy storage device according to claim 8 , wherein a length of one side of each of the rigid gaskets close to the annular conduit is longer than a length of an other side close to the large deformation concrete layer.

10 . The large deformation underground energy storage device according to claim 9 , wherein a plurality of three-way nozzle instruments are distributed along a peripheral side of the annular conduit; each of the three-way nozzle instruments comprises a pressure switch and three bifurcated nozzles, and the nozzles are used for uniformly discharging accumulated water in the annular conduit into the secondary rock layer.

Assignees

• Univ China Mining

Inventors

• Yu Liyuan
• Hu Bowen
• Sun Rui
• Mi Xianzhen
• Li Shuchen
• Su Haijian
• Li Wei
• Wei Chao
• Zhang Tao

Classifications

• F17C1/02

  involving reinforcing arrangements {(F17C1/14, F17C1/16 take precedence)} · CPC title

• B65G5/00 Primary

  Storing fluids in natural or artificial cavities or chambers in the earth · CPC title

• F17C2270/0142

  placed underground · CPC title

• F17C2260/011

  Improving strength · CPC title

• F17C2250/072

  Action when predefined value is reached · CPC title