A device for testing the underground storage of carbon dioxide

Abstract

This invention discloses an underground carbon dioxide storage test device, comprising a shell with slits on its side for observation by a first and a second electro-expansion sensor. A toothed disc is fixedly connected inside the shell. In this invention, the sensor components are rotated circumferentially and tilted at different angles, flexibly adapting to the actual distribution of carbon dioxide in moist underground soil, characterized by multi-directional dispersion and disordered fluid seepage. This overcomes the limitations of traditional fixed sensors that can only collect data in one direction, enabling comprehensive collection of multiple test parameters such as formation pressure, ambient temperature, carbon dioxide gas concentration, and medium permeation rate. It effectively eliminates monitoring blind spots, significantly reduces data acquisition deviations, and ensures accurate and reliable test data. Furthermore, it eliminates the need for densely deploying multiple sets of sensors inside the test formation, effectively reducing the number of devices required while meeting comprehensive monitoring needs, thus saving on test consumables and installation costs.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide testing technology, and more particularly to an underground carbon dioxide storage testing device. Background Technology

[0002] In underground carbon dioxide storage experiments, sensors are typically used to collect data such as formation pressure, temperature, gas concentration, and permeation rate to analyze storage efficiency and retention time under different injection conditions. However, due to angle issues during the data collection process, the collected data may be incomplete or have significant errors. In addition, setting up too many sensors will increase the additional cost. Therefore, an underground carbon dioxide storage experimental device is proposed. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the aforementioned technical problems in the prior art by proposing an underground carbon dioxide storage experimental device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An underground carbon dioxide storage test device includes a housing. A slit is provided on the side of the housing for observation by a first electro-extensibility sensor and a second electro-extensibility sensor. A geared disc is fixedly connected inside the housing. An output motor is fixedly connected above the geared disc. A worm gear is fixedly connected to the output end of the output motor. The worm gear meshes with a worm wheel rotating above the geared disc. A disc is fixedly connected to the side of the worm wheel away from the geared disc. The disc is fixedly connected to a connecting frame. The connecting frame is rotatably connected to a second pulley. The second pulley is fixedly connected to an output gear. A first pulley is connected to the side of the connecting frame for transmission. The first pulley is fixedly connected to a first bevel gear. The first bevel gear meshes with a second bevel gear that rotates on the side of a fixed block. The fixed block is fixed to the side of the connecting frame. A reciprocating threaded rod is provided on the side of the second bevel gear. The reciprocating threaded rod is threadedly connected to a mounting block that slides on the side of the connecting frame. A top rod is fixedly connected above the mounting block. A tension spring is provided above the top rod. A top plate is installed on the side of the tension spring. A support mechanism is provided above the top plate to drive the first and second electric telescopic sensors to adjust their tilt angles.

[0005] The above technical solution further includes: The second pulley is driven by a belt, and the end of the belt away from the second pulley is driven by a first pulley. The support mechanism includes a half-shell sleeve disposed above the top plate. A rotating block that rotates on the side of the support frame is installed on the side of the half-shell sleeve. The support frame is fixedly connected to the disc. An arc-shaped plate is disposed on the side of the half-shell sleeve. A connecting frame is disposed above the disc. An annular baffle is disposed at the end of the connecting frame away from the disc. A replacement mechanism for replacing the first and second electric telescopic sensors is disposed inside the half-shell sleeve. The side of the half-shell sleeve has cut holes for the first and second electric telescopic sensors to extend to the outside of the half-shell sleeve. The arc-shaped plate is slidably connected to the inside of the outer shell.

[0006] The surface of the fixed block is provided with a circular groove for the rotation of the reciprocating threaded rod.

[0007] The replacement mechanism includes a drive motor disposed on the side of the half-shell sleeve, and a drive gear is fixedly connected to the output end of the drive motor. The drive gear meshes with a rotating gear column rotating inside the half-shell sleeve.

[0008] A cover plate is fixedly installed on the top of the outer shell.

[0009] The rotating gear column is equipped with electric push-pull blocks that drive the first and second electric telescopic sensors to extend and retract.

[0010] By incorporating corresponding electrically driven push-pull blocks within the rotating gear column, the first and second electrically telescopic sensors can be independently driven to extend and retract, enabling flexible storage and extension of the sensing components. When the primary electrically telescopic sensor is damaged, contaminated, or requires maintenance, the electrically driven push-pull blocks can quickly retract it into the rotating gear column for protection, while simultaneously extending the backup second electrically telescopic sensor to the designated detection position. This allows for rapid switching of sensing components without disassembling the device, effectively preventing test interruptions due to sensor failure and ensuring the continuity of test monitoring. Furthermore, when the sensors are not in operation, they can be retracted into the device via the electrically driven push-pull blocks, preventing long-term exposure to moist underground soil and rock particles, reducing moisture erosion and debris wear, extending sensor lifespan, and ensuring the stability and accuracy of the detection data.

[0011] The annular baffle is slidably connected to the arc-shaped plate.

[0012] The annular baffle and the arc-shaped plate are connected by a sliding mechanism. This not only ensures that the arc-shaped plate slides within the outer shell along with the half-shell sleeve, allowing the half-shell sleeve to adjust its angle and thus enabling the sensor to perform multi-angle monitoring, but also ensures that the annular baffle always covers the cut in the shell, preventing the shielding from failing due to the arc-shaped plate sliding off course. Simultaneously, the sliding connection reduces frictional resistance during relative movement, making it suitable for long-term use in moist underground soil environments and preventing jamming or jamming. This ensures the stability of the protective function without affecting the overall adjustability of the device, effectively preventing soil particles and sediment from entering the device and protecting the internal transmission structure and sensing components.

[0013] The surface of the disc has an opening frame for the push rod to slide upward.

[0014] The annular baffle is slidably connected to the inside of the outer shell.

[0015] The annular baffle is slidably connected to the inner shell, allowing it to slide synchronously with the movement of the arc-shaped plate and the semi-shell sleeve. It maintains precise alignment with the cut in the outer shell, continuously providing protection and effectively preventing soil particles and sediment from entering the device through the cut, thus avoiding blockages and jamming of internal components. It also prevents moisture and impurities from corroding the sensing components, ensuring the normal operation of the device's internal structure. Furthermore, the sliding connection is simple in structure and highly adaptable, able to withstand the pressure environment of underground moist soil, reducing resistance during sliding and preventing jamming. This ensures continuous protection without affecting the overall angle adjustment of the device, further enhancing its stability and service life in underground testing environments.

[0016] The present invention has the following beneficial effects: 1. In this invention, the sensor detection component is rotated circumferentially and tilted at different angles, allowing for flexible adaptation to the actual distribution of carbon dioxide in moist underground soil, characterized by multi-directional dispersion and disordered fluid seepage. This overcomes the limitations of traditional fixed sensors that can only collect data in one direction, enabling comprehensive acquisition of multiple test parameters such as formation pressure, ambient temperature, carbon dioxide concentration, and medium permeability. It effectively eliminates monitoring blind spots, significantly reduces data acquisition bias, and ensures accurate and reliable test data. Furthermore, it eliminates the need for densely deploying multiple sets of sensors within the test formation, effectively reducing the number of devices required while meeting comprehensive monitoring needs, thus saving on test materials and installation costs.

[0017] 2. In this invention, unidirectional power transmission is achieved. This allows the motor to actively drive the sensing and adjusting structure for normal operation and positioning, while also isolating it from the reverse torque generated by underground soil compression and external ground disturbances. This prevents external forces from reversing and causing the motor output shaft to rotate, providing excellent protection for the drive motor and extending the service life of the drive components. Simultaneously, the combination of an arc-shaped plate and an annular baffle effectively blocks the cutouts on the side of the outer casing, preventing soil particles, mud, and other impurities from entering the device and avoiding blockages or jamming of the sensing components and transmission structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the underground carbon dioxide storage test device proposed in this invention; Figure 2 This is a schematic diagram of the external structure of the outer shell in this invention; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the internal structure of the present invention; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 for Figure 4 Enlarged view of point C in the middle; Figure 7 This is a schematic diagram of the bottom structure in this invention; Figure 8 for Figure 7 Enlarged diagram of point D in the middle.

[0019] In the diagram: 1. Cover plate; 2. Outer shell; 3. Cutout; 4. Gear plate; 5. Output gear; 6. First bevel gear; 7. Belt; 8. First pulley; 9. Second pulley; 10. Output motor; 11. Worm gear; 11. 12. Worm wheel; 12. Disc; 13. Connecting frame; 14. Second bevel gear; 15. Fixing block; 16. Reciprocating threaded rod; 17. Mounting block; 18. Top rod; 19. Tension spring; 20. Top plate; 21. Opening frame; 22. Support frame; 23. Rotating block; 24. Half-shell sleeve; 25. Drive motor; 26. Drive gear; 27. Rotating gear column; 28. First electric telescopic sensor; 29. ​​Second electric telescopic sensor; 30. Cut hole; 31. Arc plate; 32. Annular baffle; 33. Connecting frame. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-8 As shown, this invention is an underground carbon dioxide storage test device, including a shell 2. A slit 3 is provided on the side of the shell 2 for observation by a first electro-extensibility sensor 28 and a second electro-extensibility sensor 29. A geared disc 4 is fixedly connected inside the shell 2. An output motor 10 is fixedly connected above the geared disc 4. A worm gear 11 is fixedly connected to the output end of the output motor 10. The worm gear 11 meshes with a worm wheel 112 rotating above the geared disc 4. A disc 12 is fixedly connected to the side of the worm wheel 112 away from the geared disc 4. The disc 12 is fixedly connected to a connecting frame 13. The connecting frame 13 is rotatably connected to a second pulley 9. The second pulley 9 is fixedly connected to an output gear 5. The first pulley 8 on the side of the connecting frame 13 is connected to the transmission. The first pulley 8 is fixedly connected to the first bevel gear 6. The first bevel gear 6 is meshed with the second bevel gear 14 rotating on the side of the fixed block 15. The fixed block 15 is fixed to the side of the connecting frame 13. The side of the second bevel gear 14 is provided with a reciprocating threaded rod 16. The reciprocating threaded rod 16 is threadedly connected to the mounting block 17 sliding on the side of the connecting frame 13. A top rod 18 is fixedly connected above the mounting block 17. A tension spring 19 is provided above the top rod 18. A top plate 20 is installed on the side of the tension spring 19. A support mechanism for driving the first electric telescopic sensor 28 and the second electric telescopic sensor 29 to adjust the tilt angle is provided above the top plate 20.

[0022] In one embodiment, for the second pulley 9, the second pulley 9 is connected to a belt 7, and the end of the belt 7 away from the second pulley 9 is connected to a first pulley 8. The support mechanism includes a half-shell sleeve 24 disposed above the top plate 20. A rotating block 23 rotating on the side of the support frame 22 is installed on the side of the half-shell sleeve 24. The support frame 22 is fixedly connected to the disc 12. An arc plate 31 is provided on the side of the half-shell sleeve 24. A connecting frame 33 is provided above the disc 12. An annular baffle 32 is provided at the end of the connecting frame 33 away from the disc 12. A replacement mechanism for replacing the first electric telescopic sensor 28 and the second electric telescopic sensor 29 is provided inside the half-shell sleeve 24. The side of the half-shell sleeve 24 has cut holes 30 for the first electric telescopic sensor 28 and the second electric telescopic sensor 29 to extend to the outside of the half-shell sleeve 24. The arc plate 31 is slidably connected to the inside of the outer shell 2.

[0023] In one embodiment, the surface of the fixing block 15 is provided with a circular groove for the rotation of the reciprocating threaded rod 16.

[0024] In one embodiment, the replacement mechanism includes a drive motor 25 disposed on the side of the half-shell sleeve 24, and a drive gear 26 is fixedly connected to the output end of the drive motor 25. The drive gear 26 meshes with a rotating gear 27 rotating inside the half-shell sleeve 24.

[0025] In one embodiment, for the aforementioned housing 2, a cover plate 1 is fixedly installed on the top of the housing 2.

[0026] In one embodiment, the rotating gear 27 is provided with an electric push-pull block inside the rotating gear 27 to drive the first electric telescopic sensor 28 and the second electric telescopic sensor 29 to extend and retract.

[0027] In this embodiment, by setting a corresponding electric push-pull block inside the rotating gear column 27, the first electric telescopic sensor 28 and the second electric telescopic sensor 29 can be independently driven to complete the telescopic action, realizing flexible storage and extension of the sensing components. When the primary first electric telescopic sensor 28 is damaged, contaminated, or requires maintenance, the electric push-pull block can quickly retract it into the rotating gear column 27 for protection, while simultaneously driving the spare second electric telescopic sensor 29 to extend to the designated detection position. The sensing components can be quickly switched without disassembling the device, effectively avoiding test interruption due to sensor failure and ensuring the continuity of test monitoring. In addition, when the sensor is not working, it can be retracted into the device through the electric push-pull block to avoid long-term exposure to the underground moist soil and rock particle environment, reducing water vapor erosion and debris wear, extending the sensor's service life, and ensuring the stability and accuracy of the detection data.

[0028] In one embodiment, the annular baffle 32 is slidably connected to the arc-shaped plate 31.

[0029] In this embodiment, the annular baffle 32 and the arc-shaped plate 31 are connected by a sliding connection. This not only does not affect the sliding movement of the arc-shaped plate 31 with the half-shell sleeve 24 inside the outer shell 2, ensuring that the half-shell sleeve 24 can normally complete the angle tilt adjustment, thereby enabling the sensor to achieve multi-angle monitoring, but also ensures that the annular baffle 32 always maintains a state of blocking the shell cutout 3 through the sliding cooperation of the two, avoiding the failure of blocking due to the sliding displacement of the arc-shaped plate 31. At the same time, the sliding connection structure can reduce the frictional resistance when the two move relative to each other, adapting to long-term use in underground moist soil environments, preventing jamming and stuck phenomena, ensuring the stability of the protective function, and not affecting the overall adjustment flexibility of the device, effectively preventing rock and soil particles and silt from entering the device, protecting the internal transmission structure and sensing components to work normally.

[0030] In one embodiment, the disk 12 has an opening frame 21 on its surface for the push rod 18 to slide upward.

[0031] In one embodiment, the annular baffle 32 is slidably connected to the interior of the outer casing 2.

[0032] In this embodiment, the annular baffle 32 is slidably connected to the interior of the outer shell 2, allowing the annular baffle 32 to slide synchronously with the movement of the arc-shaped plate 31 and the semi-shell sleeve 24. It maintains precise alignment with the cutout 3 of the outer shell 2, continuously providing shielding and protection. This effectively prevents soil particles and sediment from entering the device through the cutout 3, avoiding blockages and jamming of internal components. It also prevents moisture and impurities from corroding the sensing components, ensuring the normal operation of the device's internal structure. Furthermore, the sliding connection method is simple in structure and highly adaptable, able to adapt to the pressure environment of underground moist soil, reducing the resistance during the sliding of the annular baffle 32 and preventing jamming. This ensures the continuity of the protective function without affecting the overall angle adjustment of the device, further improving the stability and service life of the device in underground testing environments.

[0033] The working principle of the underground carbon dioxide storage test device of the present invention is as follows: The outer shell 2 with a cover plate 1 is buried underground for testing as needed. During the test, the output end of the output motor 10 is rotated, driving the worm gear 11 and the worm wheel 112 rotating on the surface of the gear disc 4 to rotate. The rotation of the worm wheel 112 causes the disc 12 to rotate, which in turn drives the connecting frame 13 to rotate. The output gear 5 on the side of the connecting frame 13 drives the second pulley 9 to rotate. The second pulley 9 then uses the belt 7 to drive the first pulley 8 on the connecting frame 1... 3. The first pulley 8 drives the first bevel gear 6 to mesh with the second bevel gear 14. The second bevel gear 14 then rotates on the side of the fixed block 15. The fixed block 15 has a circular groove on its surface that allows the reciprocating threaded rod 16 to rotate, and the reciprocating threaded rod 16 does not contact the fixed block 15. The rotation of the reciprocating threaded rod 16 causes the mounting block 17 to move up and down on the side of the connecting frame 13. The mounting block 17 pushes the push rod 18, which in turn pushes the tension spring 19 to abut against the top plate 20. The top plate 20 moves upward, lifting the half-shell sleeve 24. Conversely, when the mounting block 17 descends, the tension spring 19 pulls the top plate 20, causing the half-shell sleeve 24 to... 4. Moving downwards, the rotating block 23 on the side of the half-shell sleeve 24 rotates around the side of the support frame 22. When the half-shell sleeve 24 tilts, the arc-shaped plate 31 on the side of the half-shell sleeve 24 slides inside the outer shell 2. The annular baffle 32 can block the cut 3 on the side of the outer shell 2 to prevent soil and rock from entering. The annular baffle 32 and the arc-shaped plate 31 can rotate when in contact with soil and rock. The outer surface is coated with a coating with a low coefficient of friction. When the first electric telescopic sensor 28 is damaged, its internal electric push-pull block retracts it into the rotating gear column 27. At this time, the output end of the control drive motor 25 drives the drive motor. The moving gear 26 meshes with the rotating gear 27, and then the rotating gear 27 rotates inside the half-shell sleeve 24. When the second electric telescopic sensor 29 on the side of the rotating gear 27 is aligned with the cut hole 30, the rotation of the drive motor 25 is stopped. A one-way bearing is provided at the output end of the drive motor 25 to prevent the rotating gear 27 from driving the drive gear 26 in the reverse direction and causing the drive motor 25 to rotate. Then, the electric push-pull block inside the rotating gear 27 is controlled to push the second electric telescopic sensor 29 into the cut hole 30. At this time, the second electric telescopic sensor 29 contacts the outside, and the diameter of the cut hole 30 is small, making it difficult for liquid to enter.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An underground carbon dioxide sequestration experimental device, characterized in that, The device includes a housing (2), on the side of which a slit (3) is provided for observation by a first electric telescopic sensor (28) and a second electric telescopic sensor (29). A geared disc (4) is fixedly connected inside the housing (2), and an output motor (10) is fixedly connected above the geared disc (4). A worm gear (11) is fixedly connected to the output end of the output motor (10). The worm gear (11) meshes with a worm wheel (112) rotating above the geared disc (4). A disc (12) is fixedly connected to the side of the worm wheel (112) away from the geared disc (4). The disc (12) is fixedly connected to a connecting frame (13). The connecting frame (13) is rotatably connected to a second pulley (9). The second pulley (9) is fixedly connected to an output gear (5). The second pulley (9) is rotatably connected to the side of the connecting frame (13). The first pulley (8) is connected to the first bevel gear (6) and the first bevel gear (6) is fixedly connected to the first bevel gear (6). The first bevel gear (6) is meshed with the second bevel gear (14) rotating on the side of the fixed block (15). The fixed block (15) is fixed on the side of the connecting frame (13). The side of the second bevel gear (14) is provided with a reciprocating threaded rod (16). The reciprocating threaded rod (16) is threadedly connected to the mounting block (17) sliding on the side of the connecting frame (13). A top rod (18) is fixedly connected above the mounting block (17). A tension spring (19) is provided above the top rod (18). A top plate (20) is installed on the side of the tension spring (19). A support mechanism for driving the first electric telescopic sensor (28) and the second electric telescopic sensor (29) to adjust the tilt angle is provided above the top plate (20).

2. The underground carbon dioxide sequestration test device according to claim 1, characterized in that, The second pulley (9) is driven by a belt (7), and the end of the belt (7) away from the second pulley (9) is driven by a first pulley (8). The support mechanism includes a half-shell sleeve (24) disposed above the top plate (20). A rotating block (23) rotating on the side of the support frame (22) is installed on the side of the half-shell sleeve (24). The support frame (22) is fixedly connected to the disc (12). An arc plate (31) is provided on the side of the half-shell sleeve (24). Above the disc (12) A connecting frame (33) is provided, and an annular baffle (32) is provided at one end of the connecting frame (33) away from the disc (12). The half-shell sleeve (24) is provided with a replacement mechanism for replacing the first electric telescopic sensor (28) and the second electric telescopic sensor (29). The side of the half-shell sleeve (24) is provided with cut holes (30) for the first electric telescopic sensor (28) and the second electric telescopic sensor (29) to extend to the outside of the half-shell sleeve (24). The arc plate (31) is slidably connected to the inside of the outer shell (2).

3. The underground carbon dioxide sequestration test device according to claim 1, characterized in that, The surface of the fixed block (15) is provided with a circular groove for the rotation of the reciprocating threaded rod (16).

4. The underground carbon dioxide sequestration test device according to claim 2, characterized in that, The replacement mechanism includes a drive motor (25) disposed on the side of the half-shell sleeve (24), and a drive gear (26) is fixedly connected to the output end of the drive motor (25). The drive gear (26) meshes with a rotating gear column (27) rotating inside the half-shell sleeve (24).

5. The underground carbon dioxide sequestration test device according to claim 1, characterized in that, A cover plate (1) is fixedly installed on the top of the outer shell (2).

6. The underground carbon dioxide sequestration test device according to claim 4, characterized in that, The rotating gear column (27) is equipped with electric push-pull blocks that drive the first electric telescopic sensor (28) and the second electric telescopic sensor (29) to extend and retract.

7. The underground carbon dioxide sequestration test device according to claim 2, characterized in that, The annular baffle (32) is slidably connected to the arc plate (31).

8. The underground carbon dioxide sequestration test device according to claim 1, characterized in that, The surface of the disc (12) is provided with an opening frame (21) for the top rod (18) to slide upward.

9. The underground carbon dioxide sequestration test apparatus according to claim 7, characterized in that, The annular baffle (32) is slidably connected to the inside of the outer shell (2).

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