An underground gas storage leak monitoring device

Abstract

The utility model relates to gas monitoring technical field, specifically disclose a kind of underground gas storage leak monitoring device, including box, air guide mechanism and gas detector;The air guide mechanism includes ventilating cylinder, fan blade and drive mechanism, and the ventilating cylinder includes fixed section and movable section;The drive mechanism is used to drive fan blade to rotate ventilation in ventilating cylinder and drive movable section to rotate around vertical shaft;Gas detector is arranged in the box and detects the gas in ventilating cylinder.The utility model drives ventilating cylinder to realize one hundred and eighty degrees reciprocating swing by drive mechanism, cooperates the fan blade negative pressure adsorption of air guide mechanism, compared with passive diffusion monitoring, significantly improve gas capture efficiency, shorten the leakage response time, and the detection range is expanded from single point to surface domain and direction.By worm simultaneously drive bevel gear set and worm wheel, only one power source can realize gas suction and direction adjustment, simplify mechanical structure, reduce the fault node, improve system operation reliability.

Description

Technical Field

[0001] This utility model relates to the field of gas monitoring technology, specifically to a gas leakage monitoring device for underground gas storage facilities. Background Technology

[0002] As a core infrastructure for natural gas peak shaving and supply assurance, the safe operation of underground gas storage facilities is directly related to energy security and public safety. Underground gas storage facilities typically use high-pressure sealed tanks or geological structures such as salt caverns and depleted oil and gas reservoirs to store gas. If gas leaks occur due to equipment aging, geological subsidence, or external damage, it will not only result in resource waste but may also trigger major safety accidents such as explosions and poisoning. Therefore, developing efficient and accurate leak monitoring devices for underground gas storage facilities is of great significance.

[0003] Currently, existing technologies for monitoring leaks in underground gas storage facilities mainly employ two approaches: one is fixed-point monitoring based on gas diffusion sensors, which involves deploying multiple fixed-point gas sensors around the storage facility to collect ambient gas concentrations in real time; the other is long-distance monitoring based on infrared laser telemetry, which involves emitting laser beams to penetrate soil or rock layers and detect spectral changes caused by gas leaks. However, both approaches have limitations: fixed-point monitoring is limited by sensor density and cannot cover a wide area around the storage facility, easily leading to blind spots; while telemetry technology can expand the monitoring range, it has poor adaptability to complex geological environments (such as high humidity and dust), and the equipment is expensive, making large-scale deployment difficult.

[0004] Therefore, there is an urgent need to develop a gas leakage monitoring device for underground gas storage facilities with a wide detection range and high detection efficiency to solve the problems existing in the current technology. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a gas leakage monitoring device for underground gas storage with a large detection range and high detection efficiency.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A gas leakage monitoring device for an underground gas storage facility includes a housing, an air guide mechanism, and a gas detector; The air guiding mechanism includes a ventilation duct, fan blades, and a drive mechanism. The ventilation duct includes a fixed section and a movable section. The fixed section is fixedly installed inside the housing. The movable section includes a first section arranged vertically and a second section arranged horizontally outside the housing. The first section is also rotatably installed on the housing and rotatably connected to the fixed section. The fan blades are installed inside the ventilation duct. The drive mechanism is used to drive the fan blades to rotate and ventilate inside the ventilation duct. The drive mechanism is also used to drive the movable section to rotate around a vertical axis. The gas detector is installed inside the enclosure and is used to detect the gas inside the ventilation duct.

[0007] As a further improvement to the above technical solution: The first segment of the movable section is rotatably mounted on the housing via a bearing seat.

[0008] As a further improvement to the above technical solution: The drive mechanism includes a motor; The first segment is also fitted with a rotating gear, and the rotating shafts of the rotating gear and the fan blades are both connected to the output shaft of the motor.

[0009] As a further improvement to the above technical solution: The motor is fixedly mounted on the fixed section, and the fan blades are mounted inside the fixed section; The output shaft of the motor is axially fixed perpendicular to the fixed section, and the rotating shaft of the fan blade is axially fixed along the fixed section. The fan blade's rotating shaft is connected to the motor's output shaft via a bevel gear transmission.

[0010] As a further improvement to the above technical solution: The end of the motor's output shaft is configured as a worm gear; The worm gear is meshed with a worm wheel, and a turntable is coaxially mounted on the worm wheel. A guide post is eccentrically mounted on the turntable. A rack meshes with the rotating gear, and a groove is fixedly provided on the rack. The groove is sleeved on the guide post, and the groove is used to convert the rotational motion of the guide post into linear motion of the groove in the horizontal direction.

[0011] As a further improvement to the above technical solution: A sliding rod is also fixedly installed inside the box, and a sliding sleeve is fitted on the sliding rod. The sliding sleeve is also fixedly connected to the rack. The combination of the sliding sleeve and the sliding rod is used to limit the rack to move linearly in the horizontal direction.

[0012] As a further improvement to the above technical solution: A retaining ring is provided in the fixed section and a sealing ring is provided in the movable section; or, a retaining ring is provided in the movable section and a sealing ring is provided in the fixed section. When the movable section rotates, the sealing ring is configured to rotate and seal along the arc surface of the retaining ring.

[0013] As a further improvement to the above technical solution: The ventilation duct and / or the box body are also equipped with a dustproof net.

[0014] As a further improvement to the above technical solution: A door is hinged to one side of the box.

[0015] As a further improvement to the above technical solution: The box door is equipped with a transparent observation window.

[0016] Compared with the prior art, the advantages of this utility model are: 1. A gas leakage monitoring device for an underground gas storage facility, comprising a housing, a ventilation mechanism, and a gas detector; the ventilation mechanism includes a ventilation duct, fan blades, and a drive mechanism; the ventilation duct includes a fixed section and a movable section; the fixed section is fixedly installed inside the housing; the movable section includes a first section arranged vertically and a second section arranged horizontally outside the housing; the first section is also rotatably installed on the housing and rotatably connected to the fixed section; the fan blades are installed inside the ventilation duct; the drive mechanism is used to drive the fan blades to rotate and ventilate inside the ventilation duct; the drive mechanism is also used to drive the movable section to rotate around a vertical axis; the gas detector is installed inside the housing and is used to detect the gas inside the ventilation duct. This invention uses the rotating gear and rack transmission of the drive mechanism to drive the ventilation duct to achieve 180-degree reciprocating oscillation, combined with the negative pressure adsorption of the fan blades of the ventilation mechanism, to actively adsorb external gas. Compared with passive diffusion monitoring, this significantly improves gas capture efficiency, shortens leakage response time, and expands the detection range from the single point of traditional fixed-point monitoring to a surface area and direction, effectively covering potential leakage areas around the gas storage facility and eliminating monitoring blind spots.

[0017] 2. The motor of this utility model drives both the bevel gear set and the worm wheel simultaneously through a worm gear, requiring only one power source to achieve dual functions of gas intake and direction adjustment. This simplifies the mechanical structure, reduces failure points, and improves the reliability of system operation. The dustproof net can effectively filter dust particles in the air, preventing dust from clogging the gas detector probe. The clearance fit design between the retaining ring and the sealing ring ensures the flexibility of the ventilation duct rotation while preventing external impurities from entering the detection chamber, ensuring the stability of the detection gas path. Attached Figure Description

[0018] Figure 1 This is a perspective view of a gas leakage monitoring device for an underground gas storage facility according to the present invention; Figure 2 A schematic diagram showing the interaction between the turntable and guide column in a gas leakage monitoring device for an underground gas storage facility; Figure 3 This is a schematic diagram of the engagement between the worm gear and worm wheel in a gas leakage monitoring device for an underground gas storage facility. Figure 4 A partial cross-sectional view of a gas leakage monitoring device in an underground gas storage facility; Figure 5 This is a schematic diagram showing the fit between the retaining ring and the sealing ring in a gas leakage monitoring device for an underground gas storage facility.

[0019] In the attached diagram: 1. Housing; 2. Gas detector; 3. Fixed section; 4. Fan blade; 5. Moving section; 6. Rotating gear; 7. Rack; 8. Motor; 9. Worm gear; 10. First bevel gear; 11. Second bevel gear; 12. Worm wheel; 13. Drive shaft; 14. Turntable; 15. Guide post; 16. Slide groove; 17. Sliding sleeve; 18. Slide rod; 19. Retaining ring; 20. Sealing ring; 21. Dustproof net; 22. Housing door. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example: See Figures 1-5 A gas leakage monitoring device for an underground gas storage facility includes a housing 1, an air guiding mechanism, and a gas detector 2. The air guiding mechanism includes a ventilation duct, fan blades 4, and a drive mechanism. The ventilation duct includes a fixed section 3 and a movable section 5. The fixed section 3 is fixedly installed inside the housing 1. The movable section 5 includes a first section arranged vertically and a second section arranged horizontally outside the housing 1. The first section is also rotatably installed on the housing 1 and rotatably connected to the fixed section 3. The fan blades 4 are installed inside the ventilation duct. The drive mechanism is used to drive the fan blades 4 to rotate and ventilate inside the ventilation duct. The drive mechanism is also used to drive the movable section 5 to rotate around a vertical axis. A gas detector 2 is installed inside the housing 1 and is used to detect the gas inside the ventilation duct.

[0022] The first segment of the movable segment 5 is rotatably mounted on the housing 1 via a bearing seat.

[0023] A rotating gear 6 is also fitted onto the first segment, and the rotating shafts of both the rotating gear 6 and the fan blade 4 are connected to the output shaft of the motor 8. The motor 8 is fixedly mounted on the fixed segment 3, and the fan blade 4 is mounted inside the fixed segment 3. The output shaft of the motor 8 is arranged perpendicular to the axial direction of the fixed section 3, and the rotating shaft of the fan blade 4 is arranged along the axial direction of the fixed section 3. The rotating shaft of the fan blade 4 is connected to the output shaft of the motor 8 via a bevel gear transmission. The bevel gear transmission includes a first bevel gear 10 mounted on the motor output shaft, with a second bevel gear 11 meshing on its surface. The second bevel gear 11 is fixedly connected to the rotating shaft of the fan blade 4. The first bevel gear 10 and the second bevel gear 11 convert horizontal rotation into vertical power, forming a compact layout that synchronously drives both mechanisms.

[0024] The end of the output shaft of the motor 8 is configured as a worm gear 9; a worm wheel 12 is engaged on the surface of the worm gear 9, and the engagement of the worm gear 9 with the worm wheel 12 achieves first-stage speed reduction.

[0025] Then, through a crank-slider mechanism, or in this embodiment, a turntable 14 is coaxially mounted on the worm gear 12 via a transmission shaft 13, and a guide post 15 is eccentrically mounted on the upper part of the turntable 14; a rack 7 meshes with the rotating gear 6, and a sliding groove 16 is fixedly mounted on the rack 7. The sliding groove 16 is sleeved on the guide post 15, and the sliding groove 16 is used to convert the rotational motion of the guide post 15 into the linear motion of the sliding groove 16 in the horizontal direction.

[0026] When the worm gear 12 rotates, the guide post 15 pushes the slide groove 16 to reciprocate linearly, which in turn drives the rack 7 to move, converting the rotational motion into precise linear reciprocating motion.

[0027] A slide rod 18 is also fixedly installed inside the housing 1. A sliding sleeve 17 is fitted onto the slide rod 18, and the sliding sleeve 17 is also fixedly connected to the rack 7. The combination of the sliding sleeve 17 and the slide rod 18 is used to limit the linear movement of the rack 7 in the horizontal direction. The slide rod 18 and the sliding sleeve 17 limit the rack 7. The sliding sleeve 17 on the back of the rack 7 is fitted onto the slide rod 18. Both ends of the slide rod 18 are anchored to the inner cavity of the housing 1 via fixing plates, eliminating lateral wobbling of the rack 7 and ensuring the meshing stability of the rotating gear 6. In this embodiment, a retaining ring 19 is provided in the fixed section 3, and a sealing ring 20 is provided in the movable section 5. In other embodiments, a retaining ring 19 is provided in the movable section 5, and a sealing ring 20 is provided in the fixed section 3. The retaining ring 19 and the sealing ring 20 realize the rotational connection between the fixed section 3 and the movable section 5, keeping the ventilation duct rotating while ensuring gas flow. When the ventilation duct rotates, the sealing ring 20 rotates along the arc surface of the retaining ring 19 to achieve rotational sealing and maintain the continuity of the air path.

[0028] In this embodiment, both the inner cavity of the housing 1 and the ventilation duct are equipped with dustproof nets 21. A door 22 is hinged to one side of the housing 1. The air outlet of the housing 1 and the inlet of the ventilation duct are equipped with detachable dustproof nets 21 to block large particles of foreign matter. The door 22 is hinged to the side wall of the housing 1 to facilitate the replacement of the filter and the maintenance of the internal components.

[0029] The underground gas storage leakage monitoring device in this embodiment uses the rotation of the fan blades 4 in the air guide mechanism to generate negative pressure to adsorb gas. Combined with the reciprocating oscillation or rotation of the ventilation duct in the drive mechanism, the detection range is expanded from a single point to a surface area and direction, effectively covering potential leakage areas around the gas storage facility, avoiding monitoring blind spots, and adapting to the leakage and diffusion characteristics of different gases such as natural gas or liquefied petroleum gas, thus improving monitoring accuracy. The output shaft of the motor 8 is connected to the worm gear 9, which simultaneously drives the bevel gear set to rotate the fan blades 4, and through the worm wheel 12, it drives the crank-slider mechanism to move the rack 7, achieving the effect of a single motor 8 dual-drive system.

[0030] The working principle of this embodiment is as follows: When the device is working, the output shaft of the motor 8 drives the worm gear 9 to rotate. The worm gear 9 drives the fan blade 4 to rotate through the first bevel gear 10 and the second bevel gear 11. The rotation of the fan blade 4 generates negative pressure to adsorb external gas. The gas enters the gas detector 2 through the ventilation duct to complete the detection. The worm gear 9 drives the worm wheel 12 to rotate. The worm wheel 12 drives the turntable 14 to rotate through the rotation. The turntable 14 drives the rack 7 to move back and forth through the guide post 15 and the slide groove 16. The rack 7 drives the ventilation duct to swing back and forth through the rotating gear 6, so that the gas enters the ventilation duct from different directions, expanding the detection range. The gap fit between the retaining ring 19 and the sealing ring 20 ensures gas flow while preventing leakage. The dustproof net 21 filters dust, and the box door 22 facilitates maintenance. Ultimately, it achieves efficient, wide-area, and reliable monitoring of gas leakage in underground gas storage facilities.

[0031] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A gas leakage monitoring device for an underground gas storage facility, characterized in that, This includes the enclosure, air guide mechanism, and gas detector; The air guiding mechanism includes a ventilation duct, fan blades, and a drive mechanism. The ventilation duct includes a fixed section and a movable section. The fixed section is fixedly installed inside the housing. The movable section includes a first section arranged vertically and a second section arranged horizontally outside the housing. The first section is also rotatably installed on the housing and rotatably connected to the fixed section. The fan blades are installed inside the ventilation duct. The drive mechanism is used to drive the fan blades to rotate and ventilate inside the ventilation duct. The drive mechanism is also used to drive the movable section to rotate around a vertical axis. The gas detector is installed inside the enclosure and is used to detect the gas inside the ventilation duct.

2. The underground gas storage leakage monitoring device according to claim 1, characterized in that, The first segment of the movable section is rotatably mounted on the housing via a bearing seat.

3. The underground gas storage leakage monitoring device according to claim 2, characterized in that, The drive mechanism includes a motor; The first segment is also fitted with a rotating gear, and the rotating shafts of the rotating gear and the fan blades are both connected to the output shaft of the motor.

4. The underground gas storage leakage monitoring device according to claim 3, characterized in that, The motor is fixedly mounted on the fixed section, and the fan blades are mounted inside the fixed section; The output shaft of the motor is axially fixed perpendicular to the fixed section, and the rotating shaft of the fan blade is axially fixed along the fixed section. The fan blade's rotating shaft is connected to the motor's output shaft via a bevel gear transmission.

5. The underground gas storage leakage monitoring device according to claim 4, characterized in that, The end of the motor's output shaft is configured as a worm gear; The worm gear has a worm wheel meshing on its surface, and a turntable is coaxially mounted on the worm wheel. A guide post is eccentrically mounted on the turntable. A rack meshes with the rotating gear, and a sliding groove is fixedly provided on the rack. The sliding groove is sleeved on the guide post, and the sliding groove is used to convert the rotational motion of the guide post into linear motion of the sliding groove in the horizontal direction.

6. The underground gas storage leakage monitoring device according to claim 5, characterized in that, A sliding rod is also fixedly installed inside the box, and a sliding sleeve is fitted on the sliding rod. The sliding sleeve is also fixedly connected to the rack. The combination of the sliding sleeve and the sliding rod is used to limit the rack to move linearly in the horizontal direction.

7. The underground gas storage leakage monitoring device according to claim 1, characterized in that, A retaining ring is provided in the fixed section and a sealing ring is provided in the movable section; or, a retaining ring is provided in the movable section and a sealing ring is provided in the fixed section. When the movable section rotates, the sealing ring is configured to rotate and seal along the arc surface of the retaining ring.

8. The underground gas storage leakage monitoring device according to claim 1, characterized in that, The ventilation duct and / or the box body are also equipped with a dustproof net.

9. A gas leakage monitoring device for an underground gas storage facility according to any one of claims 1-8, characterized in that, A door is hinged to one side of the box.

10. A gas leakage monitoring device for an underground gas storage facility according to claim 9, characterized in that, The box door is equipped with a transparent observation window.

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