CN-121976853-A - Three-dimensional layered hydrogen storage device and method for abandoned mine shaft

CN121976853ACN 121976853 ACN121976853 ACN 121976853ACN-121976853-A

Abstract

The invention belongs to the technical field of underground space gas storage, and particularly relates to a three-dimensional layered hydrogen storage device and method for a waste mine shaft, which realize three-dimensional layered utilization of the vertical space of the waste mine shaft by a first hydrogen storage chamber and a second hydrogen storage chamber which are respectively arranged in a first hydrogen storage chamber and a second hydrogen storage chamber through a first fixing mechanism and a second fixing mechanism; the first hydrogen storage chamber and the second hydrogen storage chamber are respectively connected with the injection and production unit, can independently perform injection and production operations of hydrogen, effectively avoid the problems of gas layering and uneven flow fields caused by temperature and pressure gradients in a single cavity, and realize real-time monitoring on the state of the hydrogen storage unit by the monitoring unit, and the injection and production process is regulated and controlled by the monitoring control unit, so that the safety of the system is jointly ensured. The invention effectively improves the space utilization rate of the shaft, and remarkably improves the storage efficiency, the operation flexibility and the safety through layered independent hydrogen storage and omnibearing monitoring.

Inventors

WEI JIALE
WU XIANGHUI
YANG KE
Han Jiazhang
FU QIANG
LI DIANSHANG
LI CAIQING
WANG CHUANBING
REN BO
REN SHUAI

Assignees

安徽理工大学
淮南矿业(集团)有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260206

Claims (10)

1. The three-dimensional layered hydrogen storage device for the abandoned mine shaft is characterized by comprising a shaft main body, wherein a hydrogen storage unit is arranged in the shaft main body, the hydrogen storage unit is connected with an injection and production unit, a first monitoring unit is arranged on the hydrogen storage unit, and a monitoring control unit is arranged on the injection and production unit; The wellbore main body comprises at least one first hydrogen storage cavity (1) and at least one second hydrogen storage cavity (2), wherein the first hydrogen storage cavity (1) and the second hydrogen storage cavity (2) are arranged from top to bottom; The hydrogen storage unit comprises at least one first hydrogen storage chamber (20) and at least one second hydrogen storage chamber (21), the first hydrogen storage chamber (20) is installed in the first hydrogen storage chamber (1) through a first fixing mechanism, the second hydrogen storage chamber (21) is installed in the second hydrogen storage chamber (2) through a second fixing mechanism, the monitoring unit is arranged on the first hydrogen storage chamber (20) and the second hydrogen storage chamber (21), and the first hydrogen storage chamber (20) and the second hydrogen storage chamber (21) are respectively connected with the injection unit.
2. The three-dimensional layered hydrogen storage device for abandoned mine shafts according to claim 1, wherein the injection and production unit comprises a hydrogen injection pipe (22) and a hydrogen production pipe (23), the hydrogen injection ports of the first hydrogen storage chamber (20) and the second hydrogen storage chamber (21) are connected in parallel to the hydrogen injection pipe (22), and the hydrogen production ports of the first hydrogen storage chamber (20) and the second hydrogen storage chamber (21) are connected in parallel to the hydrogen production pipe (23).
3. The three-dimensional layered hydrogen storage device for abandoned mine shafts according to claim 1, wherein the monitoring unit comprises optical fiber sensors (30) arranged on the first hydrogen storage chamber (20) and the second hydrogen storage chamber (21), a first multifunctional detector (24) is arranged on the outer side wall of the first hydrogen storage chamber (20), a third multifunctional detector (31) is arranged at a hydrogen injection port of the first hydrogen storage chamber (20), and a fourth multifunctional detector (32) is arranged at a hydrogen extraction port of the first hydrogen storage chamber (20); the hydrogen gas storage device is characterized in that a second multifunctional detector (25) is arranged on the outer side wall of the second hydrogen gas storage chamber (21), a fifth multifunctional detector (33) is arranged at a hydrogen injection port of the second hydrogen gas storage chamber (21), and a sixth multifunctional detector (34) is arranged at a hydrogen collection port of the second hydrogen gas storage chamber (21).
4. A three-dimensional layered hydrogen storage device for abandoned mine shafts as claimed in claim 2, wherein the monitoring control unit comprises a first pressure stabilizing valve (26), a second pressure stabilizing valve (27), a first flowmeter (28) and a second flowmeter (29), wherein the first pressure stabilizing valve (26) and the first flowmeter (28) are arranged on the hydrogen filling pipe (22), and the second pressure stabilizing valve (27) and the second flowmeter (29) are arranged on the hydrogen collecting pipe (23).
5. The three-dimensional layered hydrogen storage device for abandoned mine shafts, as set forth in claim 1, characterized in that the first fixing mechanism comprises a first clamping ring (4) and a second clamping ring (5), the first clamping ring (4) and the second clamping ring (5) are fixedly connected to the first hydrogen storage chamber (20) respectively, the first clamping ring (4) and the second clamping ring (5) are arranged on the upper portion and the lower portion of the first hydrogen storage chamber (20) respectively, and the first clamping ring (4) and the second clamping ring (5) are fixedly connected to the side wall of the first hydrogen storage chamber (1) respectively.
6. The three-dimensional layered hydrogen storage device for abandoned mine shafts as claimed in claim 5, wherein two ends of the first clamping ring (4) are fixedly arranged on the side wall of the first hydrogen storage cavity (1) through a first fixing bracket (12) and a second fixing bracket (13), and two ends of the second clamping ring (5) are fixedly arranged on the side wall of the first hydrogen storage cavity (1) through a third fixing bracket (14) and a fourth fixing bracket (15).
7. The three-dimensional layered hydrogen storage device for abandoned mine shafts according to claim 1, wherein the second fixing mechanism comprises a third clamping ring (6) and a fourth clamping ring (7), the third clamping ring (6) and the fourth clamping ring (7) are fixedly connected to the second hydrogen storage cavity (21) respectively, the third clamping ring (6) and the fourth clamping ring (7) are arranged on the upper portion and the lower portion of the second hydrogen storage cavity (21) respectively, and the third clamping ring (6) and the fourth clamping ring (7) are fixedly connected to the side wall of the second hydrogen storage cavity (2) respectively.
8. The three-dimensional layered hydrogen storage device for abandoned mine shafts as claimed in claim 7, wherein two ends of the third clamping ring (6) are fixedly arranged on the side wall of the second hydrogen storage cavity (2) through a fifth fixing bracket (16) and a sixth fixing bracket (17) respectively, and two ends of the fourth clamping ring (7) are fixedly arranged on the side wall of the second hydrogen storage cavity (2) through a seventh fixing bracket (18) and an eighth fixing bracket (19) respectively.
9. The three-dimensional layered hydrogen storage device for abandoned mine shafts according to claim 1, wherein a first valve switch (8) is arranged at a hydrogen injection port of the first hydrogen storage chamber (20), a second valve switch (9) is arranged at a hydrogen collection port of the first hydrogen storage chamber (20), a third valve switch (10) is arranged at a hydrogen injection port of the second hydrogen storage chamber (21), and a fourth valve switch (11) is arranged at a hydrogen collection port of the second hydrogen storage chamber (21).
10. A method for storing three-dimensional layered hydrogen for abandoned mine shafts, based on the three-dimensional layered hydrogen storage device for abandoned mine shafts according to any one of claims 1 to 9, characterized by comprising the steps of: When hydrogen is injected, hydrogen is independently injected into the first hydrogen storage chamber (20) and the second hydrogen storage chamber (21) through the injection and production unit, and simultaneously the injection flow and the pressure of the first hydrogen storage chamber (20) and the second hydrogen storage chamber (21) are regulated in real time by utilizing the monitoring control unit; a hydrogen storage stage for monitoring hydrogen concentration, temperature and pressure parameters inside the first hydrogen storage chamber (20) and the second hydrogen storage chamber (21) and the strain state of the chamber structure in real time through the monitoring units arranged on the first hydrogen storage chamber (20) and the second hydrogen storage chamber (21); when hydrogen is produced, the hydrogen is independently produced from the first hydrogen storage chamber (20) or the second hydrogen storage chamber (21) through the injection and production unit according to the gas demand, and the flow and the pressure of the produced hydrogen are controlled by the monitoring control unit.

Description

Three-dimensional layered hydrogen storage device and method for abandoned mine shaft Technical Field The invention belongs to the technical field of underground space gas storage, and particularly relates to a three-dimensional layered hydrogen storage device and method for abandoned mine shafts. Background With the rapid development of the hydrogen energy industry, a large-scale, safe and economical hydrogen storage technology becomes a key link. The utilization of existing underground spaces to retrofit hydrogen storage facilities is a very potential solution. The method has the advantages that the method has abundant and widely distributed waste mine resources in China, and underground spaces such as shafts, roadways and the like have huge recycling value. The method is transformed into the hydrogen storage warehouse, so that the cost of newly-built gas storage facilities can be effectively reduced, and obvious environmental benefits are brought. However, the construction of the waste shaft is very deep and vertical cylindrical space, and conventionally, if it is used as an integral gas storage, many technical bottlenecks are faced. Firstly, the space utilization rate is low, and the huge vertical depth cannot be effectively and hierarchically utilized, so that the serious waste of space resources is caused. In the hydrogen storage process, due to the influences of temperature gradient and air pressure change, gas layering and uneven flow field phenomena are easily formed in the vertical direction, so that the overall efficiency of hydrogen storage is influenced, and the safety of system operation is threatened. More importantly, the abandoned mine shaft has the common structural problems of well wall aging, loose surrounding rock, potential leakage and the like, and the abandoned mine shaft is directly used for storing hydrogen and has extremely high leakage and even collapse risks. In the prior art, although schemes such as 'abandoned mine tunnel gas storage', and the like are adopted to store gas by utilizing mine tunnels and enhance the tightness by cladding sealing layers, the techniques are mainly aimed at horizontal or inclined tunnel structures, the technical thought of the techniques cannot be directly applied to a special form of a vertical shaft, and the core problems of special three-dimensional space utilization, gas layering control, structural adaptability and the like cannot be solved. Disclosure of Invention The invention aims to provide a three-dimensional layered hydrogen storage device and method for abandoned mine shafts, so as to solve the problems. In order to achieve the above object, the present invention provides the following solutions: the three-dimensional layered hydrogen storage device for the abandoned mine shaft comprises a shaft main body, wherein a hydrogen storage unit is arranged in the shaft main body, the hydrogen storage unit is connected with an injection and production unit, a first monitoring unit is arranged on the hydrogen storage unit, and a monitoring control unit is arranged on the injection and production unit; The wellbore main body comprises at least one first hydrogen storage cavity and at least one second hydrogen storage cavity, and the first hydrogen storage cavity and the second hydrogen storage cavity are arranged from top to bottom; The hydrogen storage unit comprises at least one first hydrogen storage chamber and at least one second hydrogen storage chamber, the first hydrogen storage chamber is installed in the first hydrogen storage chamber through a first fixing mechanism, the second hydrogen storage chamber is installed in the second hydrogen storage chamber through a second fixing mechanism, the monitoring unit is arranged on the first hydrogen storage chamber and the second hydrogen storage chamber, and the first hydrogen storage chamber and the second hydrogen storage chamber are respectively connected with the injection and production unit. In the three-dimensional layered hydrogen storage device for the abandoned mine shaft, the injection and production unit comprises a hydrogen injection pipe and a hydrogen production pipe, wherein the hydrogen injection ports of the first hydrogen storage chamber and the second hydrogen storage chamber are connected in parallel to the hydrogen injection pipe, and the hydrogen production ports of the first hydrogen storage chamber and the second hydrogen storage chamber are connected in parallel to the hydrogen production pipe. In the three-dimensional layered hydrogen storage device for the abandoned mine shaft, the monitoring unit comprises optical fiber sensors arranged on the first hydrogen storage chamber and the second hydrogen storage chamber, a first multifunctional detector is arranged on the outer side wall of the first hydrogen storage chamber, a third multifunctional detector is arranged at a hydrogen injection port of the first hydrogen storage chamber, and a fourth multifunctional detect