Monitoring device for carbon dioxide geological sequestration leakage

Abstract

The invention relates to the technical field of carbon dioxide geological sequestration, and provides a carbon dioxide geological sequestration leakage monitoring device which comprises a sequestration pipeline and a machine body installed in the sequestration pipeline, and the inner wall of the sequestration pipeline is provided with an upper annular clamp and a lower annular clamp located below the upper annular clamp. A mounting seat is fixed at the bottom of the machine body; when carbon dioxide leakage is detected, a motor can be started to work, the motor drives a rotating pressing piece to start to rotate, the gear is driven to rotate with a rotating shaft as the rotating center under meshing of an inner gear ring and a gear, and the first shell is driven to rotate at the bottom of a mounting base under meshing of the gear and an outer gear ring; a spiral pressing block on the outer side of the first shell pushes a hook, so that the hook expands outwards with a pin shaft as a rotating point, an upper annular clamp in the sealing pipeline is hooked, the device is prevented from displacing under the action of air pressure below the sealing pipeline, and the problem that monitoring is affected by pressure when carbon dioxide in the pipeline leaks in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of geological storage of carbon dioxide, and in particular to a monitoring device for leakage of geological storage of carbon dioxide. Background Art

[0002] Carbon dioxide geological storage leakage monitoring refers to the monitoring of whether carbon dioxide stored in specific underground geological structures (such as oil fields, natural gas reservoirs, coal seams or salt water layers, etc.) leaks and the leakage situation. Its main purpose is to ensure the safety of carbon dioxide in the geological storage process and prevent leakage from causing potential harm to the environment and humans.

[0003] After searching, a Chinese patent with announcement number CN218865394U discloses a monitoring device for carbon dioxide geological storage leakage, including a monitoring device, a sliding rod is arranged at the bottom of the monitoring device, a pressure block is installed at the bottom of the sliding rod, a sealing airbag is installed between the monitoring device and the pressure block, and a control box is installed on the top of the monitoring device. The monitoring device monitors the concentration of carbon dioxide leakage through the carbon dioxide sensor arranged on the top of the monitoring device. When the concentration exceeds a preset value, the controller controls the electric telescopic rod to drive the pressure block to move upward to pressurize the sealing airbag, thereby sealing the storage cavity to prevent further leakage. At the same time, the controller controls the warning light and the buzzer to send out an alarm signal to remind the monitor to handle it.

[0004] However, the above-mentioned monitoring device still has the following problems: since the gas pressure inside the geological layer increases sharply after the geological sealing of carbon dioxide, once a carbon dioxide leak occurs, the pressure inside the pipeline is huge, which can easily push the monitoring device to move or push it out of the pipeline, affecting the monitoring work of the monitoring device. In addition, since the gas ejected from the pipeline contains dust, the expansion and sealing effect of the sealing airbag is affected. Summary of the invention

[0005] The present invention provides a monitoring device for carbon dioxide geological storage leakage, which solves the problems of the influence of pressure on monitoring and the expansion and sealing of a sealing airbag when carbon dioxide leaks from a pipeline in the prior art.

[0006] The technical solution of the present invention is as follows: a monitoring device for carbon dioxide geological storage leakage, comprising a storage pipeline and a body installed in the storage pipeline, an upper annular clamp and a lower annular clamp located below the upper annular clamp are provided on the inner wall of the storage pipeline, a mounting seat is fixed at the bottom of the body, and a sleeve shell supported on the lower annular clamp is rotatably provided at the bottom of the mounting seat;

[0007] The casing comprises a first shell and a second shell fixed to the bottom of the first shell, the first shell is provided with a first chamber filled with sealant, the first chamber is provided with a first elastic plug, the second shell is provided with a second chamber filled with air, the second chamber is provided with a second elastic plug, and the outer side of the second shell is provided with an elastic airbag communicating with the second chamber;

[0008] A motor fixed in the body is arranged above the mounting seat, a rotating pressure piece driven by the motor is arranged in the first shell, a transmission piece driving the sleeve shell to rotate in the opposite direction relative to the rotating pressure piece is arranged between the rotating pressure piece and the first shell, and a plurality of fixing hooks distributed in an annular manner around the first shell are arranged at the bottom of the mounting seat;

[0009] The plurality of fixed hooks are expanded outwardly under the rotation and extrusion of the sleeve shell to hook the upper ring clamp, the air in the second chamber is first squeezed into the elastic airbag under the compression of the rotating pressing piece, so that the elastic airbag expands and contacts the lower ring clamp, and the sealant in the first chamber is squeezed to the edge of the elastic airbag under the compression of the rotating pressing piece, so that the elastic airbag and the lower ring clamp fit tightly.

[0010] Preferably, an external toothed ring is fixed on the inner side of the first shell, a limiting ring is fixed to the position of the first shell located in the first chamber, a protruding foot is fixed to the outer side of the bottom of the first shell, a flow channel communicating with the first chamber is provided at the bottom of the protruding foot, and a spiral pressure block is fixed to the outer side of the middle part of the first shell.

[0011] Preferably, a first clamp ring is fixed to the outer side of the middle part of the second shell, a second clamp ring with a smaller diameter than the first clamp ring is fixed to the outer side of the bottom of the second shell, the elastic airbag is clamped between the first clamp ring and the second clamp ring, an air guide hole is opened at the top of the second shell, and a through hole is opened at the bottom of the second shell, and the through hole is communicated with the elastic airbag.

[0012] Preferably, the first elastic plug includes a first piston and a first spring, the first piston is slidably disposed in the first chamber, one end of the first spring abuts against the first piston, and the other end of the first spring abuts against the bottom wall of the first chamber, and the first piston abuts against the bottom of the limiting ring under the elastic force of the first spring.

[0013] Preferably, the second elastic plug includes a second piston and a second spring, the second piston is slidably disposed in the second chamber, one end of the second spring abuts against the second piston, and the other end of the second spring abuts against the bottom wall of the second chamber.

[0014] Preferably, the rotating pressure piece includes a rotating tube, which is rotatably connected to the mounting seat, the top end of the rotating tube passes through the mounting seat and is fixed to the output end of the motor, and a telescopic tube capable of telescopic sliding is provided on the inner side of the bottom of the rotating tube.

[0015] Preferably, a convex strip is fixed on the inner side of the rotating tube, an air outlet leading to the detection chamber inside the machine body is opened on the top of the rotating tube, and an inner gear ring is fixed on the outer side of the middle part of the rotating tube.

[0016] Preferably, a pressure ring is fixed to the outside of the telescopic tube at a position located in the first chamber, an external thread matching with the first shell thread is provided at a position above the pressure ring on the outside of the telescopic tube, a strip groove slidingly matched with the convex strip in the rotating tube is provided on the telescopic tube, and an air inlet hole is provided at the bottom of the telescopic tube.

[0017] Preferably, the transmission member comprises a rotating shaft, the rotating shaft is rotatably connected to the bottom of the mounting seat, a gear is fixed to the bottom end of the rotating shaft, the gear is meshed with the inner gear ring, and the gear is meshed with the outer gear ring.

[0018] Preferably, the fixing hook comprises a hinge seat, the hinge seat is fixed to the bottom surface of the mounting seat, and a hook is hinged on the hinge seat via a pin.

[0019] The beneficial effects of the present invention are:

[0020] 1. When the present invention detects a carbon dioxide leak, the motor can be turned on, and the motor drives the rotating pressure piece to start rotating. Under the meshing of the inner gear ring and the gear, the gear is driven to rotate with the rotating shaft as the rotation center. Under the meshing of the gear and the outer gear ring, the first shell is driven to rotate at the bottom of the mounting seat, and then the hook is pushed by the spiral pressure block on the outer side of the first shell to open outward with the pin shaft as the rotation point, and then hook the upper annular clamp in the sealed pipeline, so as to prevent the device from being displaced by the air pressure below the sealed pipeline, thereby solving the problem of the influence of pressure on monitoring when the pipeline carbon dioxide leaks in the prior art;

[0021] 2. In the present invention, since the rotation direction of the rotating tube is opposite to that of the first shell, the external thread of the telescopic tube and the thread of the first shell act together, and the convex strip and the strip groove are slidingly limited, so that the telescopic tube can be driven to slide downward relative to the rotating tube, thereby pushing the second piston downward to compress the second spring, so that the air in the second chamber enters the elastic airbag through the through hole, so that the elastic airbag expands and fits the bottom surface of the lower annular clamp inside the sealed pipe;

[0022] 3. In the present invention, the sealant in the first chamber begins to be squeezed out when the elastic airbag begins to expand, and the sealing film at the end of the flow channel can be burst under a certain pressure, so that the sealant can be applied to the edge of the expanded elastic airbag, so that the elastic airbag can fit tightly with the lower annular clip to play a sealing role and prevent the underground sealed carbon dioxide from escaping, solving the problem of expansion and sealing of the sealing airbag when carbon dioxide leaks in the pipeline in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Figure 1 A schematic diagram of a carbon dioxide geological storage leakage monitoring device provided by the present invention being installed in a storage pipeline;

[0025] Figure 2 A schematic cross-sectional structure diagram of a carbon dioxide geological storage leakage monitoring device provided by the present invention installed on a storage pipeline;

[0026] Figure 3 A schematic diagram of a half-section structure of a monitoring device for carbon dioxide geological storage leakage proposed by the present invention;

[0027] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0028] Figure 5 This is a schematic diagram of the half-section structure of the casing proposed by the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the rotary pressing piece proposed by the present invention;

[0030] In the figure: 1, sealed pipe; 2, mounting seat; 3, machine body; 4, casing; 41, first shell; 411, outer gear ring; 412, limit ring; 413, convex foot; 414, flow channel; 415, spiral pressing block; 42, second shell; 421, first clamp ring; 422, second clamp ring; 423, air guide hole; 424, through hole; 43, first chamber; 44, second chamber; 5, elastic airbag; 6, fixing hook; 61, hinge seat; 62, hook; 63, pin shaft; 7, motor ;8. Rotating pressure piece;81. Rotating tube;811. Raised strip;812. Air outlet;813. Internal gear ring;82. Telescopic tube;821. Pressing ring;822. External thread;823. Strip groove;824. Air inlet;9. First elastic plug;91. First piston;92. First spring;10. Second elastic plug;101. Second piston;102. Second spring;11. Upper ring clamp;12. Lower ring clamp;13. Transmission member;131. Rotating shaft;132. Gear. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 and Figure 2 The present invention provides a technical solution: a monitoring device for carbon dioxide geological storage leakage, comprising a sealing pipeline 1 and a body 3 installed in the sealing pipeline 1, an upper annular clamp 11 and a lower annular clamp 12 located below the upper annular clamp 11 are provided on the inner wall of the sealing pipeline 1, a mounting seat 2 is fixed to the bottom of the body 3, a sleeve 4 supported on the lower annular clamp 12 is rotatably provided at the bottom of the mounting seat 2, the sleeve 4 comprises a first shell 41 and a second shell 42 fixed to the bottom of the first shell 41, a first chamber 43 filled with sealant is provided in the first shell 41, a first elastic plug 9 is provided in the first chamber 43, a second chamber 44 filled with air is provided in the second shell 42, a second elastic plug 10 is provided in the second chamber 44, an elastic airbag 5 communicating with the second chamber 44 is provided on the outer side of the second shell 42, a motor 7 fixed in the body 3 is provided above the mounting seat 2, and the first A rotating pressure piece 8 is arranged in the shell 41 and rotates under the drive of the motor 7. A transmission piece 13 is arranged between the rotating pressure piece 8 and the first shell 41 and drives the sleeve 4 to rotate in the opposite direction relative to the rotating pressure piece 8. A plurality of fixed hooks 6 are arranged at the bottom of the mounting seat 2 and are distributed in a ring around the first shell 41. Through the above structure, when the detection instrument in the body 3 detects a carbon dioxide leakage, the motor 7 can be driven to work to drive the rotating pressure piece 8, and the sleeve 4 is driven to rotate in the opposite direction relative to the rotating pressure piece 8 under the action of the transmission piece 13. The plurality of fixed hooks 6 are expanded outwardly under the rotation and extrusion of the sleeve 4 and hook the upper ring clamp 11. The air in the second chamber 44 is first squeezed into the elastic airbag 5 under the compression of the rotating pressure piece 8, so that the elastic airbag 5 expands and contacts the lower ring clamp 12. The sealant in the first chamber 43 is squeezed on the edge of the elastic airbag 5 under the compression of the rotating pressure piece 8, so that the elastic airbag 5 and the lower ring clamp 12 fit tightly.

[0033] See also Figure 3 and Figure 5An outer tooth ring 411 is fixed to the inner side of the first shell 41, and a limit ring 412 is fixed to the position of the first shell 41 in the first chamber 43. A convex foot 413 is fixed to the outer side of the bottom of the first shell 41, and a sealing ring (not marked in the figure) is embedded in the bottom surface of the convex foot 413, so that it can be sealed with the top surface of the lower ring card 12 when contacting the lower ring card 12. A flow channel 414 communicating with the first chamber 43 is provided at the bottom of the convex foot 413, and a sealing film is provided at the end port of the flow channel 414 for sealing the sealant. To seal and prevent the sealant from leaking out, a spiral pressing block 415 is fixed to the outer side of the middle part of the first shell 41, a first clamping ring 421 is fixed to the outer side of the middle part of the second shell 42, a second clamping ring 422 with a smaller diameter than the first clamping ring 421 is fixed to the outer side of the bottom of the second shell 42, and the elastic airbag 5 is clamped between the first clamping ring 421 and the second clamping ring 422. An air guide hole 423 is opened on the top of the second shell 42, and a through hole 424 is opened on the bottom of the second shell 42, and the through hole 424 is communicated with the elastic airbag 5.

[0034] See also Figure 2 and Figure 3 The first elastic plug 9 includes a first piston 91 and a first spring 92. The first piston 91 is slidably arranged in the first chamber 43. One end of the first spring 92 abuts against the first piston 91, and the other end of the first spring 92 abuts against the bottom wall of the first chamber 43. The first piston 91 abuts against the bottom of the limiting ring 412 under the elastic force of the first spring 92. The second elastic plug 10 includes a second piston 101 and a second spring 102. The second piston 101 is slidably arranged in the second chamber 44. One end of the second spring 102 abuts against the second piston 101, and the other end of the second spring 102 abuts against the bottom wall of the second chamber 44.

[0035] See also Figure 3 and Figure 6The rotating pressing member 8 includes a rotating tube 81, which is rotatably connected to the mounting seat 2. The top of the rotating tube 81 passes through the mounting seat 2 and is fixed to the output end of the motor 7. A telescopic tube 82 capable of telescopic sliding is arranged on the inner side of the bottom of the rotating tube 81. A convex strip 811 is fixed on the inner side of the rotating tube 81. An air outlet 812 leading to the internal detection chamber of the machine body 3 is provided on the top of the rotating tube 81. An inner gear ring 813 is fixed on the outer side of the middle of the rotating tube 81. A pressure ring 821 is fixed on the outer side of the telescopic tube 82 located in the first chamber 43. An external thread 822 is provided on the outer side of the telescopic tube 82 located above the pressure ring 821 and matched with the thread of the first shell 41. The strip groove 823 slidingly cooperates with the convex strip 811 in the rotating tube 81, and the bottom of the telescopic tube 82 is provided with an air inlet hole 824. When carbon dioxide leaks below the sealed pipeline, the carbon dioxide can enter the second shell 42 through the air guide hole 423, and then enter the telescopic tube 82 through the air inlet hole 824, and enter the internal detection chamber of the body 3 through the air outlet hole 812 of the rotating tube 81 for detection. When the rotating tube 81 rotates in the opposite direction to the first shell 41, the external external thread 822 of the telescopic tube 82 and the thread of the first shell 41 act on each other, and at the same time, under the sliding limit of the convex strip 811 and the strip groove 823, the telescopic tube 82 can be driven to slide downward relative to the rotating tube 81.

[0036] See also Figure 3 and Figure 4 The transmission member 13 includes a rotating shaft 131, which is rotatably connected to the bottom of the mounting base 2. A gear 132 is fixed to the bottom end of the rotating shaft 131. The gear 132 is meshed with the inner gear ring 813, and the gear 132 is meshed with the outer gear ring 411. The motor 7 drives the rotating pressing member 8 to start rotating. The inner gear ring 813 is meshed with the gear 132, which drives the gear 132 to rotate around the rotating shaft 131 as the rotation center. The gear 132 is meshed with the outer gear ring 411, which drives the first shell 41 to rotate at the bottom of the mounting base 2.

[0037] See also Figure 2 and Figure 3 The fixed hook 6 includes a hinge seat 61, which is fixed to the bottom surface of the mounting seat 2. A hook 62 is hinged on the hinge seat 61 through a pin shaft 63. When the first shell 41 rotates at the bottom of the mounting seat 2, the hook 62 can be pushed by the spiral pressing block 415 on the outer side of the first shell 41, so that the hook 62 opens outward with the pin shaft 63 as the rotation point, and then hooks the upper annular card 11 in the sealed pipe 1 to prevent the device from being displaced by the air pressure below the sealed pipe 1.

[0038] The working principle and use process of the present invention are as follows: In the initial state, the device is as follows Figure 1 and Figure 2As shown, the convex foot 413 of the sleeve shell 4 fits with the upper surface of the lower annular clamp 12. When carbon dioxide leaks below the sealed pipeline, the carbon dioxide can enter the second shell 42 through the air guide hole 423, and then enter the telescopic tube 82 through the air inlet hole 824, and enter the internal detection chamber of the body 3 through the air outlet hole 812 of the rotating tube 81 for detection. When the detected content exceeds the set value, an alarm is triggered, and the motor 7 is started at the same time. The rotating pressing piece 8 starts to rotate driven by the motor 7. The gear 132 is driven to rotate around the rotating shaft 131 as the rotation center under the meshing of the inner gear ring 813 and the gear 132. The gear 132 is driven to rotate at the bottom of the mounting seat 2 under the meshing of the gear 132 and the outer gear ring 411, and then the first shell 41 is driven to rotate at the bottom of the mounting seat 2, and then the outer spiral of the first shell 41 is used to rotate. The pressing block 415 pushes the hook 62, so that the hook 62 opens outward with the pin shaft 63 as the rotation point, and then hooks the upper ring clamp 11 in the sealed pipe 1, preventing the device from being displaced by the air pressure below the sealed pipe 1. At the same time, since the rotation direction of the rotating tube 81 is opposite to that of the first shell 41, the external thread 822 of the telescopic tube 82 and the thread of the first shell 41 act, and the protruding strip 811 and the strip groove 823 are slidingly limited, so that the telescopic tube 82 can be driven to slide downward relative to the rotating tube 81, and then the second piston 101 is pushed downward to compress the second spring 102, so that the air in the second chamber 44 enters the elastic airbag 5 through the through hole 424, so that the elastic airbag 5 expands and fits the bottom surface of the lower ring clamp 12 inside the sealed pipe 1;

[0039] like Figure 2 As shown, in the initial state, the bottom end of the telescopic tube 82 is always in contact with the second piston 101, and the pressure ring 821 on the outside of the telescopic tube 82 maintains a certain distance from the first piston 91, so the pressure ring 821 contacts the first piston 91, and the sealant in the first chamber 43 begins to be squeezed out when the elastic airbag 5 has begun to expand, and can only burst the sealing film at the end of the flow channel 414 under a certain pressure, so that the sealant can be applied to the edge of the expanded elastic airbag 5, so that the elastic airbag 5 can fit tightly with the lower annular card 12, play a sealing role, and prevent the carbon dioxide sealed underground from escaping.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A monitoring device for carbon dioxide geological storage leakage, comprising a storage pipeline (1) and a body (3) installed in the storage pipeline (1), characterized in that: An upper annular clamp (11) and a lower annular clamp (12) located below the upper annular clamp (11) are provided on the inner wall of the sealing pipe (1); a mounting seat (2) is fixed to the bottom of the body (3); a sleeve (4) supported on the lower annular clamp (12) is rotatably provided at the bottom of the mounting seat (2); The casing (4) comprises a first shell (41) and a second shell (42) fixed to the bottom of the first shell (41); a first chamber (43) filled with sealant is provided in the first shell (41); a first elastic plug (9) is provided in the first chamber (43); a second chamber (44) filled with air is provided in the second shell (42); a second elastic plug (10) is provided in the second chamber (44); an elastic airbag (5) communicating with the second chamber (44) is provided on the outer side of the second shell (42); A motor (7) fixed in the machine body (3) is arranged above the mounting seat (2); a rotating pressure piece (8) driven to rotate by the motor (7) is arranged in the first shell (41); a transmission piece (13) driving the sleeve (4) to rotate in the opposite direction relative to the rotating pressure piece (8) is arranged between the rotating pressure piece (8) and the first shell (41); and a plurality of fixing hooks (6) distributed in an annular manner around the first shell (41) are arranged at the bottom of the mounting seat (2); The plurality of fixing hooks (6) are expanded outwards under the rotation and extrusion of the sleeve (4) to hook the upper ring clamp (11); the air in the second chamber (44) is first squeezed into the elastic airbag (5) under the compression of the rotating pressing piece (8), so that the elastic airbag (5) expands and contacts the lower ring clamp (12); the sealant in the first chamber (43) is squeezed on the edge of the elastic airbag (5) under the compression of the rotating pressing piece (8), so that the elastic airbag (5) and the lower ring clamp (12) are tightly fitted.

2. A monitoring device for carbon dioxide geological storage leakage according to claim 1, characterized in that: An outer toothed ring (411) is fixed on the inner side of the first shell (41); a limit ring (412) is fixed to the position of the first shell (41) located in the first chamber (43); a convex foot (413) is fixed to the outer side of the bottom of the first shell (41); a flow channel (414) communicating with the first chamber (43) is provided at the bottom of the convex foot (413); and a spiral pressing block (415) is fixed to the outer side of the middle part of the first shell (41).

3. A monitoring device for carbon dioxide geological storage leakage according to claim 2, characterized in that: A first clamping ring (421) is fixed to the outer side of the middle part of the second shell (42), a second clamping ring (422) having a smaller diameter than the first clamping ring (421) is fixed to the outer side of the bottom of the second shell (42), the elastic airbag (5) is clamped between the first clamping ring (421) and the second clamping ring (422), an air guide hole (423) is provided at the top of the second shell (42), and a through hole (424) is provided at the bottom of the second shell (42), and the through hole (424) is communicated with the elastic airbag (5).

4. A monitoring device for carbon dioxide geological storage leakage according to claim 3, characterized in that: The first elastic plug (9) includes a first piston (91) and a first spring (92). The first piston (91) is slidably disposed in the first chamber (43). One end of the first spring (92) abuts against the first piston (91), and the other end of the first spring (92) abuts against the bottom wall of the first chamber (43). The first piston (91) abuts against the bottom of the limiting ring (412) under the elastic force of the first spring (92).

5. The device for monitoring leakage of geological storage of carbon dioxide according to claim 4, characterized in that: The second elastic plug (10) includes a second piston (101) and a second spring (102). The second piston (101) is slidably disposed in the second chamber (44). One end of the second spring (102) abuts against the second piston (101), and the other end of the second spring (102) abuts against the bottom wall of the second chamber (44).

6. The device for monitoring leakage of geological storage of carbon dioxide according to claim 5, characterized in that: The rotating pressing member (8) comprises a rotating tube (81) which is rotatably connected to the mounting seat (2). The top end of the rotating tube (81) passes through the mounting seat (2) and is fixed to the output end of the motor (7). A telescopic tube (82) capable of telescopic sliding is provided on the inner side of the bottom of the rotating tube (81).

7. The device for monitoring leakage of geological storage of carbon dioxide according to claim 6, characterized in that: A convex strip (811) is fixed on the inner side of the rotating tube (81), an air outlet (812) leading to the internal detection chamber of the machine body (3) is opened on the top of the rotating tube (81), and an inner gear ring (813) is fixed on the outer side of the middle part of the rotating tube (81).

8. The device for monitoring leakage of geological storage of carbon dioxide according to claim 7, characterized in that: A pressure ring (821) is fixed to the outside of the telescopic tube (82) at a position located in the first chamber (43); an external thread (822) that is threadedly matched with the first shell (41) is provided on the outside of the telescopic tube (82) at a position located above the pressure ring (821); a strip groove (823) that is slidably matched with the inner convex strip (811) of the rotating tube (81) is provided on the telescopic tube (82); and an air inlet hole (824) is provided at the bottom of the telescopic tube (82).

9. The device for monitoring leakage of geological storage of carbon dioxide according to claim 7, characterized in that: The transmission member (13) comprises a rotating shaft (131), wherein the rotating shaft (131) is rotatably connected to the bottom of the mounting seat (2), a gear (132) is fixed to the bottom end of the rotating shaft (131), the gear (132) is meshed with the inner gear ring (813), and the gear (132) is meshed with the outer gear ring (411).

10. The device for monitoring leakage of carbon dioxide geological storage according to claim 1, characterized in that: The fixed hook member (6) comprises a hinge seat (61), the hinge seat (61) is fixed to the bottom surface of the mounting seat (2), and a hook (62) is hingedly connected to the hinge seat (61) via a pin shaft (63).

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