Maintenance system for tank type gas storage cavern and cavern

Abstract

The invention relates to the technical field of compressed air energy storage, in particular to a maintenance system for a tank type air storage cavern and the cavern. The maintenance system comprises an annular beam and a cross beam, the annular beam is arranged on the inner wall of the cavern in the annular direction of the cavern, the cross beam is arranged in the radial direction of the cavern, and the two ends of the cross beam are slidably connected with the annular beam; the annular beam is slidably connected with a first sliding lifting device, the cross beam is slidably connected with a movable trolley and a second sliding lifting device, the lower end of the first sliding lifting device is connected with a first maintenance cage, and the lower end of the second sliding lifting device is connected with a second maintenance cage. Maintenance personnel can be conveyed to all positions in the cavern, through mutual cooperation of the cross beam, the annular beam and the moving device, all-directional maintenance of a similar ultra-large and ultra-high span cavern structure can be achieved, the maintenance range can cover all spaces of the tank type gas storage cavern, the maintenance personnel can rapidly reach a maintenance point, and the maintenance efficiency is improved. And the airtightness of a sealing layer of the gas storage cavern and the reliability of a supporting structure can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of compressed air energy storage technology, and in particular to a maintenance system and a storage chamber for tank-type air storage chambers. Background Technology

[0002] Artificial gas storage caverns have become the mainstream gas storage solution in the construction and planning of compressed air energy storage system projects due to their high safety performance, strong site adaptability, good durability, and economic rationality. From a structural perspective, artificial gas storage caverns can be mainly divided into two typical structures: tunnel type and tank type. Among them, tank-type gas storage caverns offer greater flexibility in site selection and better sealing safety, making them more suitable for deployment in sites with complex geological conditions or limited space.

[0003] However, this type of structure also faces a series of engineering and technical challenges. Because tank-type caverns typically have large structural spans, with diameters often exceeding 40 meters and heights frequently surpassing 80 meters, the resulting vast internal space, while beneficial for gas storage, presents significant difficulties for manual maintenance. Maintenance personnel cannot comprehensively cover all areas of the cavern, especially the top, high side walls, and concealed parts at the bottom, creating obvious blind spots that limit maintenance efficiency and quality. As the scale of compressed air energy storage power plants continues to expand, the operational reliability of the gas storage cavern, as a critical facility, directly impacts the long-term stability of the entire system. Existing maintenance methods are insufficient to meet the comprehensive and systematic inspection needs of large-span tank-type caverns.

[0004] Therefore, there is an urgent need to develop a comprehensive maintenance system and supporting solutions that can adapt to the structural characteristics of tank-type gas storage caverns, so as to achieve effective monitoring and timely maintenance of the cavern's internal condition and provide technical support for the safe and long-term operation of the gas storage caverns. Summary of the Invention

[0005] The purpose of this invention is to overcome the technical problem that existing cavern maintenance measures have blind spots and cannot achieve full coverage for tank-type gas storage caverns with large structural spans, resulting in low maintenance efficiency and quality. The invention provides a maintenance system and cavern for tank-type gas storage caverns.

[0006] In a first aspect, the present invention provides a maintenance system for a tank-type gas storage cavern, comprising an annular beam and a crossbeam. The annular beam is arranged circumferentially on the inner wall of the cavern, and the crossbeam is arranged radially along the cavern. Both ends of the crossbeam are slidably connected to the annular beam. A first sliding lifting device is slidably connected to the annular beam, and a mobile trolley and a second sliding lifting device are slidably connected to the crossbeam. The lower end of the first sliding lifting device is connected to a first maintenance cage, and the lower end of the second sliding lifting device is connected to a second maintenance cage.

[0007] This invention provides a movement path on the tunnel cross-section (i.e., the horizontal plane) by constructing a ring beam along the circumference of the tunnel interior and a crossbeam along the radial direction of the tunnel interior. The crossbeam is slidably connected to the ring beam and can rotate along the ring beam. A first sliding lifting device is installed on the ring beam, which can drive a first maintenance cage below to move circumferentially along the tunnel interior wall. The height of the first maintenance cage can also be adjusted via the first sliding lifting device, allowing maintenance personnel to enter the first maintenance cage and, under the control of the first sliding lifting device, reach any position on the tunnel sidewall for maintenance. A mobile trolley and a second sliding lifting device, installed on the crossbeam, can slide along the crossbeam. Combined with the rotation of the crossbeam, the mobile trolley and the second sliding lifting device can reach any position on the tunnel cross-section. The mobile trolley has a lifting function, allowing maintenance personnel to ride it and rise to near the top of the cavern's interior wall for maintenance. A second maintenance cage is connected below the second sliding lifting device; the height of the second maintenance cage can be adjusted by the second sliding lifting device, allowing maintenance personnel to enter the second maintenance cage and be lowered to near the bottom of the cavern's interior wall for maintenance. This invention can transport maintenance personnel to various locations within the cavern. Through the cooperation of the crossbeams, ring beams, and the mobile device, comprehensive maintenance of similar ultra-large and ultra-high span cavern structures can be achieved. The maintenance scope can cover all spaces of the tank-type gas storage cavern, allowing maintenance personnel to quickly reach the maintenance point, which helps ensure the airtightness of the gas storage cavern's sealing layer and the reliability of the support structure.

[0008] Preferably, the top of the annular beam is provided with an annular slide rail, and the bottom of both ends of the crossbeam are provided with first drive trolleys. The bottom of the first drive trolley is provided with a first roller assembly, which is connected to the annular slide rail. The first drive trolley is provided with a first drive motor, which is connected to the first roller assembly.

[0009] The two ends of the crossbeam are slidably connected by a first drive trolley and an annular slide rail, enabling the crossbeam to rotate along the annular beam. Specifically, a first drive motor installed in the first drive trolley provides driving force, driving the first roller assembly to rotate, thereby causing the two ends of the crossbeam to rotate along the annular beam. During rotation, the two first drive trolleys at both ends of the crossbeam need to be moved simultaneously. Preferably, the first sliding lifting device includes a second drive trolley, a second roller assembly, a first winch, and a first lifting cable. The second drive trolley is slidably connected to the ring beam. The second roller assembly is disposed on the top of the second drive trolley and cooperates with the ring beam. The first winch is disposed at the bottom of the second drive trolley. The first lifting cable passes around the first winch and is connected to the first maintenance cage.

[0010] Preferably, the second drive trolley is provided with a second drive motor, and the second drive motor is connected to the second roller assembly.

[0011] The second drive trolley can slide on the annular beam while the second drive motor drives the second roller group to roll, thereby causing the first sliding lifting device to move circumferentially along the side wall of the cavern. The first winch can lower or raise the first lifting cable, thereby controlling the up and down movement of the first maintenance cage. In other words, the first maintenance cage can move circumferentially and vertically along the side wall of the cavern under the drive of the first winch and the second drive trolley, thereby allowing the first maintenance cage to reach any position on the side wall of the cavern below the annular beam. Maintenance personnel can also carry out maintenance work at any position on the side wall of the cavern below the annular beam under the support of the first maintenance cage.

[0012] Preferably, the crossbeam is provided with a crossbeam slide rail, the mobile trolley is connected to the crossbeam slide rail, and the second sliding lifting device is connected to the bottom of the crossbeam; the mobile trolley and the second sliding lifting device can move along the crossbeam slide rail on the crossbeam.

[0013] Preferably, the second sliding lifting device includes a third drive trolley, a third roller assembly, a second winch, and a second lifting cable. The third drive trolley is slidably connected to the crossbeam. The third roller assembly is located on the top of the third drive trolley and cooperates with the crossbeam. The second winch is located at the bottom of the third drive trolley. The second lifting cable passes around the second winch and is connected to the second maintenance cage.

[0014] Preferably, the third drive trolley is equipped with a third drive motor, which is connected to the third roller assembly.

[0015] The third drive trolley can slide on the crossbeam while the third drive motor drives the third roller group to roll, thereby causing the second sliding lifting device to move radially along the cavern. The second winch can lower or raise the second lifting cable, thereby controlling the up and down movement of the second maintenance cage. The crossbeam can rotate on the ring beam or drive the second maintenance cage to rotate or move circumferentially. In other words, the second maintenance cage can move radially and vertically along the cavern under the drive of the second winch and the third drive trolley, and can also rotate or move circumferentially, thereby allowing the second maintenance cage to be lowered to any position at the bottom of the cavern. Maintenance personnel can also carry out maintenance work at any position at the bottom of the cavern under the support of the second maintenance cage.

[0016] Preferably, the mobile trolley includes a base, a lifting mechanism, and a maintenance platform. The base is provided with a fourth set of rollers, and the base is slidably connected to the crossbeam slide rail through the fourth set of rollers. The lifting mechanism is fixedly connected to the top of the base, and the maintenance platform is fixedly connected to the top of the lifting mechanism.

[0017] Preferably, the base is provided with a fourth drive motor and a hydraulic pump, the fourth drive motor is connected to the fourth roller group, the lifting mechanism includes a scissor-type hydraulic telescopic rod, and the hydraulic pump is connected to the scissor-type hydraulic telescopic rod.

[0018] The fourth drive motor in the base can drive the fourth roller group to roll on the crossbeam slide rail, thereby driving the base to slide so that the moving trolley can slide along the crossbeam slide rail. The hydraulic pump can control the scissor-type hydraulic telescopic rod to lift the maintenance platform up or lower it down, thereby realizing the vertical movement of the maintenance platform. In other words, the maintenance platform can move the trolley along the crossbeam, and at the same time, it can move or rotate in a circle as the crossbeam rotates on the ring beam. It can also move vertically up and down under the drive of the lifting mechanism. Maintenance personnel can be moved on the maintenance platform to any position at the top of the cavern to carry out maintenance work.

[0019] In a second aspect, the present invention provides a tank-type gas storage cavern, including the maintenance system for the tank-type gas storage cavern as described above, wherein a first plug is provided on one side of the top of the cavern, and a first maintenance passage is provided in the first plug; a second plug is provided on one side of the bottom of the cavern, and a second maintenance passage is provided in the second plug; the annular beam and the crossbeam are provided corresponding to the first plug.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a maintenance system and cavern for a tank-type gas storage cavern. An annular beam along the circumference of the cavern and a crossbeam along the radial direction of the cavern provide a movement path on the cavern's cross-section (i.e., the horizontal plane). The crossbeam is slidably connected to the annular beam and can rotate along the annular beam. A first sliding lifting device is mounted on the annular beam, which can drive a first maintenance cage below to move circumferentially along the cavern's inner wall. The height of the first maintenance cage can be adjusted via the first sliding lifting device, allowing maintenance personnel to enter the first maintenance cage and, under the control of the first sliding lifting device, reach any position on the cavern's sidewall for maintenance. A mobile trolley and a second sliding lifting device mounted on the crossbeam can slide along the crossbeam. Combined with the rotation of the crossbeam, the mobile trolley and the second sliding lifting device can move to... The mobile trolley has a lifting function, allowing maintenance personnel to ride it and rise to near the top of the cavern's inner wall for maintenance of the cavern's top. A second maintenance cage is connected below the second sliding lifting device; the height of the second maintenance cage can be adjusted by the second sliding lifting device, allowing maintenance personnel to enter the second maintenance cage and be lowered to near the bottom of the cavern's inner wall for maintenance of the cavern's bottom. This invention can transport maintenance personnel to various locations within the cavern. Through the cooperation of the crossbeams, ring beams, and the mobile device, comprehensive maintenance of similar ultra-large and ultra-high span cavern structures can be achieved. The maintenance scope can cover all spaces of the tank-type gas storage cavern, allowing maintenance personnel to quickly reach the maintenance point, which helps ensure the airtightness of the gas storage cavern's sealing layer and the reliability of the support structure. Attached Figure Description

[0021] Figure 1 This is a schematic elevation sectional view of the gas storage chamber equipped with a maintenance system according to the present invention.

[0022] Figure 2 This is a three-dimensional schematic diagram of the ring beam and crossbeam (the second sliding lifting device is not shown).

[0023] Figure 3 This is a schematic diagram of the structure of a mobile trolley mounted on a crossbeam slide rail.

[0024] Figure 4 This is a schematic diagram of the connection structure between the sliding lifting device and the crossbeam and the ring beam.

[0025] Figure 5 This is a structural diagram of the maintenance cage.

[0026] Figure 6 This is a top view of the ring beam and the crossbeam.

[0027] Figure 7 for Figure 2 A magnified view of a portion of point A in the middle.

[0028] Marked in the image: 1. Ring beam; 11. Ring slide rail; 2. Crossbeam; 21. Crossbeam slide rail; 22. First drive trolley; 23. First roller group; 3. Moving trolley; 31. Base; 32. Lifting mechanism; 33. Maintenance platform; 34. Fourth roller group; 4. First sliding lifting device; 41. Second drive trolley; 42. Second roller group; 43. First winch; 44. First lifting cable; 5. Second sliding lifting device; 51. Third drive trolley; 52. Third roller group; 53. Second winch; 54. Second lifting cable; 6. First maintenance cage; 7. Second maintenance cage; 8. Cavern; 9. First plug; 91. First maintenance passage; 10. Second plug; 101. Second maintenance passage. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0030] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0031] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0032] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0033] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0034] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0035] Example 1 This embodiment provides a maintenance system for tank-type gas storage caverns.

[0036] like Figure 1 , Figure 2 and Figure 6 As shown, the maintenance system for the tank-type gas storage cavern in this embodiment includes a ring beam 1 and a crossbeam 2. The ring beam 1 is arranged circumferentially on the inner wall of the cavern 8, and the crossbeam 2 is arranged radially along the cavern 8. Both ends of the crossbeam 2 are slidably connected to the ring beam 1. A first sliding lifting device 4 is slidably connected to the ring beam 1, and a mobile trolley 3 and a second sliding lifting device 5 are slidably connected to the crossbeam 2. The lower end of the first sliding lifting device 4 is connected to a first maintenance cage 6, and the lower end of the second sliding lifting device 5 is connected to a second maintenance cage 7.

[0037] This invention provides a circular beam 1 along the circumference of the cavern 8 and a transverse beam 2 along the radial direction of the cavern 8, providing a movement path on the cross-section (i.e., horizontal plane) of the cavern 8. The transverse beam 2 is slidably connected to the circular beam 1 and can rotate along the circular beam 1. A first sliding lifting device 4 is installed on the circular beam 1, which can drive the first maintenance cage 6 below to move circumferentially along the inner wall of the cavern 8. At the same time, the height of the first maintenance cage 6 can be adjusted by the first sliding lifting device 4, allowing maintenance personnel to enter the first maintenance cage 6 and reach any position on the side wall of the cavern 8 under the control of the first sliding lifting device 4 for maintenance. The mobile trolley 3 and the second sliding lifting device 5 installed on the transverse beam 2 can slide along the transverse beam 2. Combined with the rotation of the transverse beam 2, the mobile trolley 3 and the second sliding lifting device 5 can reach the cross-section (i.e., horizontal plane) of the cavern 8. At any position on the surface, the mobile trolley 3 has a lifting function, allowing maintenance personnel to ride the mobile trolley 3 and rise to near the top of the inner wall of the cavern 8 for maintenance of the top of the cavern 8; a second maintenance cage 7 is connected below the second sliding lifting device 5, and the height of the second maintenance cage 7 can be adjusted by the second sliding lifting device 5, allowing maintenance personnel to enter the second maintenance cage 7 and be lowered to near the bottom of the inner wall of the cavern 8 for maintenance of the bottom of the cavern 8; this invention can transport maintenance personnel to various positions in the cavern 8, and through the cooperation of the crossbeam 2, the ring beam 1 and the mobile device, it can realize all-round maintenance of similar ultra-large and ultra-high span cavern 8 structures, and the maintenance range can cover all spaces of the tank-type cavern 8, allowing maintenance personnel to quickly reach the maintenance point, which helps to ensure the airtightness of the sealing layer of the cavern 8 and the reliability of the support structure.

[0038] In this embodiment, as Figure 2 , Figure 6 and Figure 7 As shown, the top of the annular beam 1 is provided with an annular slide rail 11, and the bottom of both ends of the crossbeam 2 are provided with a first drive trolley 22. The bottom of the first drive trolley 22 is provided with a first roller group 23, which is connected to the annular slide rail 11. The first drive trolley 22 is provided with a first drive motor (not shown in the figure), which is connected to the first roller group 23. Here, the first drive motor can be a motor.

[0039] The two ends of the crossbeam 2 are connected by the cooperation between the first drive trolley 22 and the annular slide rail 11 to realize the rotation of the crossbeam 2 along the annular beam 1. Specifically, the first drive motor installed in the first drive trolley 22 can provide driving force to drive the first roller group 23 to rotate, thereby the two ends of the crossbeam 2 rotate along the annular beam 1. When rotating, the two first drive trolleys 22 at both ends of the crossbeam 2 need to be controlled to move simultaneously.

[0040] In this embodiment, as Figure 1 and Figure 4As shown, the first sliding lifting device 4 includes a second drive trolley 41, a second roller assembly 42, a first winch 43, and a first lifting cable 44. The second drive trolley 41 is slidably connected to the ring beam 1. The second roller assembly 42 is located on the top of the second drive trolley 41 and cooperates with the ring beam 1. Specifically, the bottom of the ring beam 1 is provided with a slide rail structure symmetrical to the ring slide rail 11 (not shown in the figure). The second roller assembly 42 can cooperate with the slide rail at the bottom of the ring beam 1 and be suspended at the bottom of the ring beam 1. The first winch 43 is located at the bottom of the second drive trolley 41. The first lifting cable 44 passes around the first winch 43 and is connected to the first maintenance cage 6.

[0041] Alternatively, the second drive trolley 41 may contain a second drive motor (not shown in the figure), which is connected to the second roller assembly 42; here, the second drive motor may be an electric motor.

[0042] In this embodiment, as Figure 1 , Figure 2 and Figure 6 As shown, a crossbeam slide rail 21 is provided on the crossbeam 2, a moving trolley 3 is connected to the crossbeam slide rail 21, and a second sliding lifting device 5 is connected to the bottom of the crossbeam 2. The moving trolley 3 and the second sliding lifting device 5 can move along the crossbeam 2.

[0043] like Figure 1 and Figure 4 As shown, the second sliding lifting device 5 includes a third drive trolley 51, a third roller assembly 52, a second winch 53, and a second lifting cable 54. The third drive trolley 51 is slidably connected to the crossbeam 2. The third roller assembly 52 is located on the top of the third drive trolley 51 and cooperates with the crossbeam 2. Specifically, the bottom of the crossbeam 2 is provided with a slide rail structure symmetrical to the crossbeam slide rail 21 (not shown in the figure). The third roller assembly 52 can cooperate with the slide rail at the bottom of the crossbeam 2 and be suspended at the bottom of the crossbeam 2. The second winch 53 is located at the bottom of the third drive trolley 51. The second lifting cable 54 passes around the second winch 53 and is connected to the second maintenance cage 7.

[0044] Alternatively, the third drive trolley 51 may contain a third drive motor (not shown in the figure), which is connected to the third roller assembly 52; here, the third drive motor may be an electric motor.

[0045] The third drive trolley 51 can slide on the crossbeam slide rail 21 while the third drive motor drives the third roller group 52 to roll, thereby causing the second sliding lifting device 5 to move radially along the cavern 8. The second winch 53 can lower or raise the second lifting cable 54, thereby controlling the second maintenance cage 7 to move up and down. The crossbeam 2 can rotate on the ring beam 1 and can also drive the second maintenance cage 7 to rotate or move circumferentially. That is to say, the second maintenance cage 7 can move radially and vertically along the cavern 8 under the drive of the second winch 53 and the third drive trolley 51, and can also rotate or move circumferentially, thereby allowing the second maintenance cage 7 to be lowered to any position at the bottom of the cavern. Maintenance personnel can also carry out maintenance work at any position at the bottom of the cavern 8 under the support of the second maintenance cage 7.

[0046] The first lifting cable 44 and the second lifting cable 54 can be steel wire ropes or transmission chains, etc. The ring track and the crossbeam 2 track can be high-strength H-beams. The ring beam 1 and the crossbeam 2 can both be reinforced concrete structures. The ring beam 1 and the tunnel structure can be fixedly connected by welding the steel bars in the ring beam 1 to the sealing layer steel lining of the inner wall of the tunnel 8.

[0047] In this embodiment, as Figure 1 and Figure 3 As shown, the mobile trolley 3 includes a base 31, a lifting mechanism 32, and a maintenance platform 33. The base 31 is provided with a fourth roller group 34. The base 31 is slidably connected to the crossbeam slide rail 21 through the fourth roller group 34. The lifting mechanism 32 is fixedly connected to the top of the base 31, and the maintenance platform 33 is fixedly connected to the top of the lifting mechanism 32.

[0048] Alternatively, the base 31 is provided with a fourth drive motor (not shown in the figure) and a hydraulic pump (not shown in the figure). The fourth drive motor is connected to the fourth roller group 34. Here, the fourth drive motor can be a motor. The lifting mechanism 32 includes a scissor-type hydraulic telescopic rod, and the hydraulic pump is connected to the scissor-type hydraulic telescopic rod.

[0049] The fourth drive motor in the base 31 can drive the fourth roller group 34 to roll on the crossbeam slide rail 21, thereby driving the base 31 to slide so that the moving trolley 3 slides along the crossbeam slide rail 21. The hydraulic pump can control the scissor-type hydraulic telescopic rod to lift the maintenance platform 33 upward or lower it downward, thereby realizing the vertical movement of the maintenance platform 33. That is to say, the maintenance platform 33 can move the moving trolley 3 along the crossbeam 2, and at the same time, it can move or rotate in a circle as the crossbeam 2 rotates on the ring beam 1. It can also move vertically up and down under the drive of the lifting mechanism 32. Maintenance personnel can be moved on the maintenance platform 33 to any position at the top of the cavern 8 to carry out maintenance work.

[0050] Figure 5The diagram shows the structure of the first maintenance cage 6. The first maintenance cage 6 is suspended from the lower end of the first lifting cable 44. The structure of the first maintenance cage 6 can be identical to that of the second maintenance cage 7. The cage body of the first maintenance cage 6 is a semi-enclosed metal frame structure, with guardrails on all sides. The guardrails can be directly protected with wire mesh. A protective door is provided on the guardrails, allowing maintenance personnel to enter and exit the first maintenance cage 6 to perform maintenance work on the tunnel walls or floor. Both the first sliding lifting device 4 and the second sliding lifting device 5 are equipped with safety protection systems. When the maintenance cage exceeds its speed, the fall arrestor will be automatically triggered, restricting the movement of the maintenance cage. Simultaneously, when the maintenance cage is overloaded, it will automatically stop operation and trigger an alarm. Other special circumstances, such as the protective door not being closed, will also trigger an alarm.

[0051] Example 2 This embodiment provides a tank-type gas storage cavern.

[0052] like Figure 1 As shown, the tank-type gas storage cavern of this embodiment includes the maintenance system for the tank-type gas storage cavern of Embodiment 1. The maintenance system is installed in the cavern 8. A first plug 9 is provided on one side of the top of the cavern, and a first maintenance passage 91 is opened in the first plug 9. A second plug 10 is provided on one side of the bottom of the cavern 8, and a second maintenance passage 101 is opened in the second plug 10. The annular beam 1 and the crossbeam 2 are provided corresponding to the first plug 9. That is, the annular beam 1 and the crossbeam 2 are located in the cavern 8 near the first plug 9. During the maintenance period of the tank-type gas storage cavern, maintenance personnel can pass through the first plug. The first maintenance passage 91 inside the tank leads to the track system containing the annular beam 1 and the crossbeam 2 via a staircase. The mobile trolley 3 is then moved along the crossbeam 2. The track system is controlled from the control panel. Through the three-dimensional linkage of the track system and the mobile trolley 3, a comprehensive inspection of the dome can be achieved. Alternatively, the sliding lifting device can be controlled to move the maintenance cage to the second end 10. Maintenance personnel can then enter the maintenance cage of the side wall and tank bottom from the second maintenance passage 101 inside the second end 10. Through the three-dimensional linkage of the track system and the maintenance cage, a comprehensive inspection of the side wall and tank bottom can be achieved.

[0053] In summary, this invention provides a maintenance system and cavern for a tank-type gas storage cavern. By providing a ring beam along the circumference of the cavern and a crossbeam along the radial direction of the cavern, a movement path is provided on the cavern's cross-section (i.e., the horizontal plane). The crossbeam is slidably connected to the ring beam and can rotate along the ring beam. A first sliding lifting device is mounted on the ring beam, which can drive a first maintenance cage below to move circumferentially along the cavern's inner wall. Simultaneously, the height of the first maintenance cage can be adjusted via the first sliding lifting device. Maintenance personnel can enter the first maintenance cage and, under the control of the first sliding lifting device, reach any position on the cavern's sidewall for maintenance. A mobile trolley and a second sliding lifting device mounted on the crossbeam can slide along the crossbeam. Combined with the rotation of the crossbeam, the mobile trolley and the second sliding lifting device can move freely along the crossbeam. The device can reach any position on the cross-section of the cavern. The mobile trolley has a lifting function, allowing maintenance personnel to ride the mobile trolley and rise to near the top of the cavern's inner wall for maintenance of the cavern's top. A second maintenance cage is connected below the second sliding lifting device. The height of the second maintenance cage can be adjusted by the second sliding lifting device, allowing maintenance personnel to enter the second maintenance cage and be lowered to near the bottom of the cavern's inner wall for maintenance of the cavern's bottom. This invention can transport maintenance personnel to various positions within the cavern. Through the cooperation of the crossbeams, ring beams, and the mobile device, it can achieve comprehensive maintenance of similar ultra-large and ultra-high span cavern structures. The maintenance range can cover all spaces of the tank-type gas storage cavern, allowing maintenance personnel to quickly reach the maintenance point, which helps ensure the airtightness of the gas storage cavern's sealing layer and the reliability of the support structure.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An inspection system for a salt cavern gas storage facility, comprising: The utility model relates to a kind of movable maintenance cage, including annular beam (1) and crossbeam (2), the annular beam (1) is arranged on the inner wall of cavern (8) along the ring direction of cavern (8), the crossbeam (2) is arranged along the radial direction of the cavern (8), the both ends of the crossbeam (2) are slidably connected with the annular beam (1), first sliding lifting device (4) is slidably connected on the annular beam (1), mobile trolley (3) and second sliding lifting device (5) are slidably connected on the crossbeam (2), the lower end of the first sliding lifting device (4) is connected with first maintenance cage (6), the lower end of the second sliding lifting device (5) is connected with second maintenance cage (7).

2. The inspection system for a tank storage cavern according to claim 1, characterized in that, The top of the annular beam (1) is provided with an annular slide rail (11), the bottom of the both ends of the crossbeam (2) is provided with a first drive pulley (22), the bottom of the first drive pulley (22) is provided with a first roller set, and the first roller set is connected with the annular slide rail (11) in a matching manner.

3. The inspection system for a tank storage cavern according to claim 2, characterized in that, The first sliding lifting device (4) comprises a second drive pulley (41), a second roller set (42), a first winch (43) and a first lifting cable (44), the second drive pulley (41) is slidably connected with the annular beam (1), the second roller set (42) is arranged on the top of the second drive pulley (41) and matches with the annular beam (1), the first winch (43) is arranged on the bottom of the second drive pulley (41), and the first lifting cable (44) passes through the first winch (43) and is connected to the first maintenance cage (6).

4. The inspection system for a tank storage cavern according to claim 3, characterized in that, The second drive pulley (41) is provided with a second drive motor, and the second drive motor is connected with the second roller set (42).

5. The inspection system for a tank storage cavern according to claim 1, wherein, The crossbeam (2) is provided with a crossbeam slide rail (21), the mobile trolley (3) is connected to the crossbeam slide rail (21), and the second sliding lifting device (5) is connected to the bottom of the crossbeam (2).

6. The inspection system for a tank storage cavern according to claim 5, characterized in that, The second sliding lifting device (5) comprises a third drive pulley (51), a third roller set (52), a second winch (53) and a second lifting cable (54), the third drive pulley (51) is slidably connected with the crossbeam (2), the third roller set (52) is arranged on the top of the third drive pulley (51) and matches with the crossbeam (2), the second winch (53) is arranged on the bottom of the third drive pulley (51), and the second lifting cable (54) passes through the second winch (53) and is connected to the second maintenance cage (7).

7. The inspection system for a tank storage cavern according to claim 6, characterized in that, The third drive pulley (51) is provided with a third drive motor, and the third drive motor is connected with the third roller set (52).

8. The inspection system for a tank storage cavern of claim 5, wherein, The mobile trolley (3) comprises a base (31), a lifting mechanism (32) and an inspection platform (33), the fourth roller group (34) is arranged on the base (31), the base (31) is slidably connected with the cross beam slide rail (21) through the fourth roller group (34), the lifting mechanism (32) is fixedly connected on the top of the base (31), and the inspection platform (33) is fixedly connected on the top of the lifting mechanism (32).

9. The inspection system for a tank storage cavern according to claim 8, characterized in that, The fourth driving machine is connected with the fourth roller group (34), the lifting mechanism (32) comprises a scissor type hydraulic telescopic rod, and the hydraulic pump is connected with the scissor type hydraulic telescopic rod.

10. A salt cavern, characterized in that The inspection system for the tank type gas storage cavern comprises the inspection system for the tank type gas storage cavern according to any one of claims 1 to 9, the inspection system is installed in the gas storage cavern, one side of the top of the cavern (8) is provided with a first plug (9), the first plug (9) is provided with a first inspection channel (91), one side of the bottom of the cavern (8) is provided with a second plug (10), the second plug (10) is provided with a second inspection channel (101), and the annular beam (1) and the cross beam (2) are arranged correspondingly to the first plug (9).

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