Underground gas storage cavern group and compressed air energy storage system

Abstract

The invention provides an underground gas storage cavern group and a compressed air energy storage system, and relates to the technical field of underground gas storage caverns, the underground gas storage cavern group comprises a first annular gas storage chamber, a second annular gas storage chamber is arranged on the inner ring of the first annular gas storage chamber, a transverse pipe is fixed to the diameter of the first annular gas storage chamber and the diameter of the second annular gas storage chamber, and the two ends of the transverse pipe are sealed; connecting openings are formed in the two sides, corresponding to the connection of the first annular gas storage chamber and the second annular gas storage chamber, of the transverse pipe, vertical pipes are symmetrically fixed to the positions, located at the circle center of the second annular gas storage chamber, of the transverse pipe, and the gas storage capacity can be increased through a cave group composed of the two annular gas storage chambers; high-pressure gas can be sent out or sent in from the two ends of the annular gas storage chamber, the use of the two groups of gas storage chambers can be switched through the plugs, and through the detection assembly at the top of the vertical pipe, when one group of pipelines leaks gas, the gas storage chambers can be closed, gas conveying can be paused, the other group of pipelines can be opened comprehensively, and the original gas inlet and outlet efficiency is maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of underground gas storage chambers, and in particular to an underground gas storage chamber group and a compressed air energy storage system. Background Art

[0002] Compressed air energy storage technology is a large-scale, long-term, and large-capacity electric energy storage technology. When electricity consumption is low, the compressor converts electric energy into air internal energy and stores it in the gas storage system in the form of high-pressure air. When electricity consumption is high, the high-pressure air is released from the gas storage system and the expander generates electricity to convert the air internal energy into electric energy. The compressed air energy storage system stores the above-mentioned high-pressure air through the gas storage system. The gas storage pressure is usually around 10MPa, which belongs to the medium-high pressure range. The existing gas storage systems are divided into above-ground gas storage systems and underground gas storage systems. The underground gas storage system is particularly suitable for areas with underground excavation conditions such as underground rock formations.

[0003] Existing underground gas storage chambers are generally horizontally arranged cylindrical, with blind-end seals required at both ends. The gas storage capacity is limited, and the blind ends are easily damaged under long-term high pressure, making maintenance inconvenient. In addition, when a single chamber enters and exits gas through the air inlet and outlet pipes, pipeline leaks are prone to danger, making it difficult to repair the leaking pipeline in a timely manner. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an underground gas storage cavern group and a compressed air energy storage system to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. The cavern group composed of two groups of annular gas storage chambers can increase the gas storage capacity. Through the connection of the horizontal pipe and the vertical pipe, high-pressure gas can be delivered or delivered from both ends of the annular gas storage chamber. The use of the two groups of gas storage chambers can be switched through the plug. Through the detection component on the top of the vertical pipe, when one group of pipelines leaks, it can be closed to suspend the gas delivery, and the other group can be fully opened to maintain the original gas inlet and outlet efficiency.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: an underground gas storage cavern group and compressed air energy storage system, including a first annular gas storage chamber, a second annular gas storage chamber is arranged in the inner circle of the first annular gas storage chamber, a transverse tube is fixed to the diameter of the first annular gas storage chamber and the second annular gas storage chamber, the two ends of the transverse tube are sealed, and the transverse tube is provided with connecting ports on both sides corresponding to the connection between the first annular gas storage chamber and the second annular gas storage chamber, the transverse tube is symmetrically fixed with a vertical tube at the center of the second annular gas storage chamber, the top and bottom of the vertical tube are sealed, and an inlet and outlet air pipe is installed inside the vertical tube, the top of the inlet and outlet air pipe passes through the vertical tube, and the inlet and outlet air pipe is The bottom of the air pipe is arranged in a shape inside the transverse pipe, and connecting components are arranged inside the two ends of the transverse pipe. The connecting component includes a plug, and the plug is slidably inserted into the two ends of the transverse pipe. Air inlets and outlets are opened on both sides of the middle of the plug, and the air inlets and outlets correspond alternately to the connecting ports of the first annular air storage chamber and the second annular air storage chamber. A detection component is provided on the top of the vertical pipe, and the detection component includes a movable plate. A movable plate is slidably installed on the top of the vertical pipe, and the movable plate is slidably sleeved on the surface of the inlet and outlet air pipes. A sliding rod is slidably and sealably inserted at the center of the plug, and one end of the sliding rod is fixedly connected to the outermost end of the transverse pipe, and the movable plate is transmission-connected to the sliding rod.

[0006] Furthermore, the connecting component also includes a sealing ring, and one end of the inlet and outlet air pipes arranged inside the cross pipe is slidably inserted into one end of the plug, and a sealing ring is arranged at the position on the outside of the plug corresponding to the insertion of the inlet and outlet air pipes, and the sealing ring is sealingly sleeved on the periphery of the inlet and outlet air pipes.

[0007] Furthermore, the plug is hollow inside, and a circular plate is rotatably installed inside the plug corresponding to the air inlet and outlet. Two arc plates are symmetrically fixed on the center of the circular plate, and the arc plates slide along the inner wall of the plug. The two arc plates respectively cover half of the area of ​​the air inlet and outlet on both sides.

[0008] Furthermore, convex strips are fixed on both sides of the surface of the sliding rod, the circular plate is slidably sleeved on the sliding rod and the convex strips, and a sealing ring is provided on the back side of the circular plate corresponding to the position where the convex strips and the sliding rod pass through.

[0009] Furthermore, two groups of winding seats are fixed inside the horizontal tube located between the two vertical rods. The two groups of winding seats are arranged up and down, and a pull rope is wound on the winding shaft of the winding seat. The two pull ropes are respectively fixedly connected to the plugs at both ends of the horizontal tube, and the other end of the plug is fixed with a first spring to the inner wall of the outermost end of the horizontal tube.

[0010] Furthermore, a driving motor is fixed on the inner wall of the horizontal tube at a position corresponding to the upper winding seat, and the output end of the driving motor is fixedly connected to the winding shaft of the upper winding seat, and a first gear is rotatably installed on the other side of the two winding seats, the two first gears are meshed and connected, and the first gear is fixedly connected to the winding shaft.

[0011] Furthermore, the detection component also includes a suspension rope, the top of the vertical pipe is fixed with the suspension rope, the bottom of the suspension rope is fixedly connected to the movable plate, and a second spring is fixed between the top of the movable plate and the top of the vertical pipe.

[0012] Furthermore, a second gear is fixed to one end of the sliding rod passing through the plug, and a toothed plate is meshedly connected to one side of the second gear, and the toothed plate slides along the inner wall of the vertical tube.

[0013] Furthermore, a connecting rod is fixed on the top of the tooth plate, and the connecting rod is fixedly passed through the top of the movable plate, and transmission ropes are arranged at the outer ends of the two vertical tubes, and the two ends of the transmission ropes pass through the interior of the vertical tubes and are fixedly connected to the two connecting rods.

[0014] Furthermore, a pressure sensor is installed on the inner wall of the air inlet and outlet pipes passing through the vertical pipe.

[0015] Beneficial effects of the present invention: When there is leaked high-pressure gas in the vertical pipe of the present invention, the high pressure will push the movable plate to move upward and compress the second spring. At the same time, because the movable plate in this position moves upward, it drives the connecting rod and the toothed plate to move upward and mesh with the corresponding second gear, driving the sliding rod to rotate, and the circular plate and arc plate inside the corresponding plug will also rotate, and the two arc plates are changed from semi-blocking to fully blocking, blocking the air inlet and outlet and the connecting port, and no longer releasing or feeding gas. Because the two movable plates are connected by a transmission rope, the movable plate at the other end will drop. At the beginning, the two movable plates maintain balance, and the second spring is partially compressed. The descending movable plate drives the toothed plate to mesh with the second gear, so that the arc plate inside the plug in this position turns in the opposite direction to the other group, presenting a fully open style, and the air inlet and outlet and the connecting port are fully opened, and the original structure with both ends half-open is transformed into a structure with one end fully open and the other end closed, so as to keep the overall gas delivery volume unchanged and at the same time block the leaking part to prevent further leakage of high-pressure gas.

[0016] The present invention drives the winding shaft of the upper winding seat to rotate through a motor, and through the meshing connection of two first gears, the winding seat at the lower end and the upper end reel in and out through reverse pulling ropes, thereby synchronously driving the plugs at both ends of the horizontal tube to move. The moving directions of the plugs are opposite, and the switching of the connecting ports of the first annular air storage chamber and the second annular air storage chamber can be completed at the same time. At the same time, when the winding seat unwinds, the position of the plug is reset by the first spring.

[0017] The present invention can move the plug between the first annular air storage chamber and the second annular air storage chamber by placing the gas inlet and outlet of the plug in the middle position. At this time, both connecting ports of the first annular air storage chamber and the second annular air storage chamber are blocked, and no gas is sent in or out. When the gas inlet and outlet of the plug are moved to correspond to any one of the gas storage chambers, the connection of the gas storage chamber is achieved separately. The lengths of the two ends of the plug can meet the requirement that when the gas inlet and outlet are connected to the connecting ports of one group of gas storage chambers, the connecting ports of the other group of gas storage chambers are blocked.

[0018] When the plug is moved by the pull rope, the circular plate slides along the surface of the slide rod. Through the arrangement of the convex strips on the slide rod, the circular plate and the arc plate can still be driven to rotate by the rotation of the slide rod after the movement.

[0019] The two arc plates of the present invention respectively cover half of the area of ​​the air inlet and outlet on both sides, and the end of the inlet and outlet pipes located inside the horizontal pipe is inserted into the plug. As shown in the figure, this is the state where the plug corresponds to the first annular air storage chamber. At this time, the plug still maintains connection with the inlet and outlet pipes, and will not be separated from the inlet and outlet pipes during the process of switching the air storage chamber connection.

[0020] Compared with the prior art, the present invention can increase the gas storage capacity by forming a cavern group consisting of two groups of annular gas storage chambers. Through the connection of the horizontal pipe and the vertical pipe, high-pressure gas can be delivered from or into the two ends of the annular gas storage chamber. The use of the two groups of gas storage chambers can be switched through the plug. Through the detection component on the top of the vertical pipe, when one group of pipelines leaks, it can be closed to suspend the gas delivery, and the other group can be fully opened to maintain the original gas inlet and outlet efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of an underground gas storage cavern group and a compressed air energy storage system of the present invention; Figure 2 It is a schematic diagram of the overall structure of an underground gas storage cavern group and a compressed air energy storage system of the present invention; Figure 3 It is a schematic diagram of the internal structure of a horizontal pipe of an underground gas storage cavern group and a compressed air energy storage system of the present invention; Figure 4 It is a schematic diagram of the top structure of a vertical pipe of an underground gas storage cavern group and a compressed air energy storage system of the present invention; Figure 5 It is a schematic diagram of the internal structure of the horizontal pipe and vertical pipe of an underground gas storage cavern group and a compressed air energy storage system of the present invention; Figure 6 It is a schematic diagram of the installation of a reel seat of an underground gas storage cavern group and a compressed air energy storage system of the present invention; Figure 7 It is a schematic diagram of the structure of the connected components of an underground gas storage cavern group and a compressed air energy storage system of the present invention; Figure 8 It is a schematic diagram of the connection between the second gear and the gear plate of an underground gas storage cavern group and a compressed air energy storage system of the present invention; Fig. 9 The present invention is a schematic diagram of the structure of a detection component of an underground gas storage cavern group and a compressed air energy storage system.

[0022] In the figure: 1. first annular air storage chamber; 11. second annular air storage chamber; 2. horizontal pipe; 21. connecting port; 3. vertical pipe; 31. air inlet and outlet pipes; 32. pressure sensor; 4. connecting component; 41. air inlet and outlet; 42. plug; 43. sealing ring; 44. pull rope; 45. winding seat; 46. first gear; 47. driving motor; 48. circular plate; 49. arc plate; 410. sliding rod; 411. convex strip; 412. second gear; 413. tooth plate; 414. connecting rod; 415. first spring; 5. detection component; 51. transmission rope; 52. moving plate; 53. suspension rope; 54. second spring. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] See also Figures 1 to 9The present invention provides a technical solution: an underground gas storage cavern group and a compressed air energy storage system, comprising a first annular gas storage chamber 1, a second annular gas storage chamber 11 is arranged in the inner circle of the first annular gas storage chamber 1, a transverse pipe 2 is fixed to the diameter of the first annular gas storage chamber 1 and the second annular gas storage chamber 11, both ends of the transverse pipe 2 are sealed, and the transverse pipe 2 is provided with a connection port 21 on both sides corresponding to the connection of the first annular gas storage chamber 1 and the second annular gas storage chamber 11, and the transverse pipe 2 is symmetrically fixed with a vertical The top and bottom of the vertical pipe 3 are sealed, and an air inlet and outlet pipe 31 is installed inside the vertical pipe 3. The top of the air inlet and outlet pipe 31 passes through the vertical pipe 3, and the bottom of the air inlet and outlet pipe 31 is L-shaped and arranged inside the horizontal pipe 2. A connecting component 4 is arranged inside both ends of the horizontal pipe 2. The connecting component 4 includes a plug 42, and the plug 42 is slidably plugged at both ends of the horizontal pipe 2. Inlet and outlet ports 41 are opened on both sides of the middle of the plug 42, and the inlet and outlet ports 41 are alternately connected to the first annular air storage chamber 1 and the second annular air storage chamber 11. The top of the vertical pipe 3 is provided with a detection assembly 5 corresponding to the connection port 21, and the detection assembly 5 includes a moving plate 52. The moving plate 52 is slidably installed on the top of the vertical pipe 3, and the moving plate 52 is slidably sleeved on the surface of the inlet and outlet air pipes 31. The center of the plug 42 is slidably sealed and plugged with a sliding rod 410, and one end of the sliding rod 410 is fixedly connected to the outermost end of the horizontal pipe 2. The moving plate 52 is transmission-connected with the sliding rod 410. When the device is used, the arrangement of the first annular air storage chamber 1 and the second annular air storage chamber 11 of the device The arrangement of the gas storage chambers is the same as that of the existing gas storage chambers. The outer ends of the inlet and outlet pipes 31 inside the vertical pipe 3 are connected to the compressor and the expander to form a complete compressed air energy storage system. When in use, the first annular gas storage chamber 1 and the second annular gas storage chamber 11 are switched through the connecting component 4 to discharge or intake air. The detection component 5 inside the vertical pipe 3 detects whether there is gas outflow, and the leaking part is blocked, and no gas is fed in or out. The vertical pipe 3 on the other side takes in or releases gas to fill the entire annular gas storage chamber.

[0025] The plug 42 is provided with a sealing ring 43 at one end thereof, and the sealing ring 43 is sealingly sleeved on the periphery of the air inlet and outlet pipes 31. The plug 42 is hollow inside, and a circular plate 48 is rotatably mounted on the plug 42 corresponding to the air inlet and outlet port 41. Two arc plates 49 are symmetrically fixed on the center of the circular plate 48, and the arc plates 49 slide along the inner wall of the plug 42. The two arc plates 49 respectively cover half of the area of ​​the air inlet and outlet ports 41 on both sides. One end of the air inlet and outlet pipe 31 located inside the transverse pipe 2 is inserted into the plug 42. As shown in the figure, the plug 42 is in a state corresponding to the first annular air storage chamber 1. At this time, the plug 42 still maintains connection with the air inlet and outlet pipes 31, and will not be separated from the air inlet and outlet pipes 31 during the process of switching the air storage chamber connection.

[0026] In this embodiment, convex strips 411 are fixed on both sides of the surface of the slide bar 410, the circular plate 48 is slidably sleeved on the slide bar 410 and the convex strips 411, and a sealing ring is provided on the back of the circular plate 48 corresponding to the position where the convex strips 411 and the slide bar 410 pass through, and two groups of winding seats 45 are fixed inside the horizontal tube 2 located between the two vertical rods. The two groups of winding seats 45 are arranged up and down, and a pull rope 44 is wound on the winding shaft of the winding seat 45, and the two pull ropes 44 are respectively connected to the horizontal tube 2. The plugs 42 at both ends of the tube 2 are fixedly connected, and the other end of the plug 42 is fixed to the inner wall of the outermost end of the transverse tube 2 with a first spring 415. The motor drives the winding shaft of the upper winding seat 45 to rotate, and through the meshing connection of the two first gears 46, the winding seat 45 at the lower end and the upper end rewind and unwind the pull rope 44 in the opposite direction, thereby synchronously driving the plugs 42 at both ends of the transverse tube 2 to move. The moving directions of the plugs 42 are opposite, and the first annular air storage chamber 1 and the second annular air storage chamber 1 can be completed at the same time. The connection port 21 of the air chamber 11 is switched, and when the winding seat 45 is unwinding, the position of the plug 42 is reset by the first spring 415, and the air inlet and outlet 41 of the plug 42 is in the middle position, and it can be moved between the first annular air storage chamber 1 and the second annular air storage chamber 11. At this time, the two connection ports 21 of the first annular air storage chamber 1 and the second annular air storage chamber 11 are blocked, and no gas is sent in or out. When the air inlet and outlet 41 of the plug 42 moves to correspond to any one of the air storage chambers, the connection of the air storage chamber is realized separately. The length of both ends of the plug 42 can meet the requirement that when the air inlet and outlet 41 is connected to the connection port 21 of one group of air storage chambers, the connection port 21 of the other group of air storage chambers is blocked. When the pull rope 44 drives the plug 42 to move, the circular plate 48 slides along the surface of the sliding rod 410. Through the setting of the convex strip 411 on the sliding rod 410, after the movement, the rotation of the circular plate 48 and the arc plate 49 can still be driven by the rotation of the sliding rod 410.

[0027] In this embodiment, a driving motor 47 is fixed to the position of the upper winding seat 45 on the inner wall of the horizontal tube 2, and the output end of the driving motor 47 is fixedly connected to the winding shaft of the upper winding seat 45. A first gear 46 is rotatably installed on the other side of the two winding seats 45. The two first gears 46 are meshed and connected, and the first gear 46 is fixedly connected to the winding shaft. The detection component 5 also includes a hanging rope 53. The top of the vertical tube 3 is fixed with a hanging rope 53. The bottom of the hanging rope 53 is fixedly connected to the moving plate 52. A second spring 54 is fixed between the top of the moving plate 52 and the top of the vertical tube 3. The end of the sliding rod 410 passing through the plug 42 is fixed with a first spring 54. The second gear 412 is meshed with a tooth plate 413 on one side of the second gear 412, and the tooth plate 413 slides along the inner wall of the vertical tube 3. A connecting rod 414 is fixed on the top of the tooth plate 413, and the connecting rod 414 is fixedly passed through the top of the moving plate 52. Transmission ropes 51 are arranged at the outer ends of the two vertical tubes 3, and the two ends of the transmission rope 51 pass through the interior of the vertical tube 3 and are fixedly connected with the two connecting rods 414. A pressure sensor 32 is installed on the inner wall of the inlet and outlet pipes 31 passing through the vertical tube 3. The detection basis for whether the inlet and outlet pipes 31 are leaking is mainly based on the value of the pressure sensor 32. In the initial stage, it is obtained through testing that the inlet and outlet pipes 31 in the two vertical tubes 3 are leaking. The pressure value when sending out or sending in gas. During the operation stage, when a set of pressure values ​​changes, the pressure sensor 32 transmits a signal to the system terminal to issue an early warning. At the same time, when there is a leak of high-pressure gas in the vertical pipe 3, the high pressure will push the movable plate 52 to move upward, compressing the second spring 54. At the same time, because the movable plate 52 moves upward at this position, it drives the connecting rod 414 and the toothed plate 413 to move upward, meshing with the corresponding second gear 412, driving the slide bar 410 to rotate, and the circular plate 48 and the arc plate 49 inside the corresponding plug 42 will also rotate. The two arc plates 49 change from the original semi-blocking to full blocking, blocking the inlet and outlet 41 and the connecting port 21. No more gas is released or introduced, because the two movable plates 52 are connected by the transmission rope 51, the movable plate 52 at the other end will drop. At the beginning, the two movable plates 52 maintain balance, and the second spring 54 is partially compressed. The descending movable plate 52 drives the tooth plate 413 to engage with the second gear 412, so that the arc plate 49 inside the plug 42 at this position is opposite to the other group of rotations, presenting a fully open style, and the air inlet and outlet 41 and the connecting port 21 are fully opened, and the original structure with both ends half-open is transformed into a structure with one end fully open and the other end closed, so as to keep the overall gas delivery volume unchanged, and at the same time, the leaking part is blocked to prevent further leakage of high-pressure gas.

[0028] When the device is in use, the arrangement of the first annular air storage chamber 1 and the second annular air storage chamber 11 of the device are the same as the arrangement of the existing air storage chambers. The outer ends of the inlet and outlet air pipes 31 inside the vertical pipe 3 are connected to the compressor and the expander to form a complete compressed air energy storage system. The motor drives the winding shaft of the upper winding seat 45 to rotate, and through the meshing connection of the two first gears 46, the winding seat 45 at the lower end and the upper end are wound and unwound through the reverse pull rope 44, thereby synchronously driving the plugs 42 at both ends of the horizontal pipe 2 to move. The moving directions of the plugs 42 are opposite, and the switching of the connecting ports 21 of the first annular air storage chamber 1 and the second annular air storage chamber 11 can be completed at the same time. At the same time, when the winding seat 45 is unwound, the position of the plug 42 is reset by the first spring 415, and the plug The air inlet and outlet 41 of 42 is in the middle position, and it can be moved between the first annular air storage chamber 1 and the second annular air storage chamber 11. At this time, the two connecting ports 21 of the first annular air storage chamber 1 and the second annular air storage chamber 11 are blocked, and no gas is sent in or out. When the air inlet and outlet 41 of the plug 42 moves to correspond to any one of the air storage chambers, the connection of the air storage chamber is realized separately. The lengths of both ends of the plug 42 can meet the requirements that when the air inlet and outlet 41 is connected to the connecting ports 21 of one group of air storage chambers, the connecting ports 21 of another group of air storage chambers are blocked. When the pull rope 44 drives the plug 42 to move, the circular plate 48 slides along the surface of the sliding rod 410. Through the setting of the convex strip 411 on the sliding rod 410, after the movement, the circular plate 48 can still be driven by the rotation of the sliding rod 410. 8 and the rotation of the arc plate 49. The detection basis for whether the inlet and outlet air pipes 31 are leaking is mainly based on the value of the pressure sensor 32. In the initial stage, the pressure value of the inlet and outlet air pipes 31 in the two vertical pipes 3 when sending out or sending in gas is obtained through testing. In the operation stage, when a set of pressure values ​​changes, the pressure sensor 32 transmits a signal to the system terminal to issue an early warning. At the same time, when there is a leak of high-pressure gas in the vertical pipe 3, the high pressure will push the movable plate 52 to move upward and compress the second spring 54. At the same time, because the movable plate 52 moves upward at this position, it drives the connecting rod 414 and the tooth plate 413 to move upward, meshing with the corresponding second gear 412, driving the slide bar 410 to rotate, and the circular plate 48 and the arc plate 49 inside the corresponding plug 42 will also rotate. The arc plate 49 changes from half-blocking to full-blocking, blocking the air inlet and outlet 41 and the connecting port 21, and no longer releasing or supplying gas. Because the two movable plates 52 are connected by the transmission rope 51, the movable plate 52 at the other end will drop. At the beginning, the two movable plates 52 maintain balance, and the second spring 54 is partially compressed. The descending movable plate 52 drives the tooth plate 413 to engage with the second gear 412, so that the arc plate 49 inside the plug 42 at this position is opposite to the other group of rotations, presenting a fully open style, and the air inlet and outlet 41 and the connecting port 21 are fully opened, and the original structure with both ends half-open is transformed into a one-end fully open and the other end closed, keeping the overall gas delivery volume unchanged, and at the same time blocking the leaking part to prevent further leakage of high-pressure gas.

[0029] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An underground gas storage cavern group and a compressed air energy storage system, comprising a first annular gas storage chamber (1), characterized in that: The inner circle of the first annular air storage chamber (1) is provided with a second annular air storage chamber (11); the first annular air storage chamber (1) and the second annular air storage chamber (11) are fixed with a transverse tube (2) at the diameters thereof; both ends of the transverse tube (2) are sealed; and connecting ports (21) are provided on both sides of the transverse tube (2) corresponding to the connection between the first annular air storage chamber (1) and the second annular air storage chamber (11); the transverse tube (2) is symmetrically fixed with a vertical tube (3) at the center of the second annular air storage chamber (11); the top and bottom of the vertical tube (3) are sealed; and an air inlet and outlet pipe (31) is installed inside the vertical tube (3); the top of the air inlet and outlet pipe (31) passes through the vertical tube (3); and the bottom of the air inlet and outlet pipe (31) is arranged in an L shape inside the transverse tube (2); and connecting components (4) are arranged inside the two ends of the transverse tube (2); and the connecting components (4) are provided inside The component (4) comprises a plug (42), the plug (42) being slidably plugged at both ends of the transverse tube (2), air inlet and outlet ports (41) being provided on both sides of the middle of the plug (42), and the air inlet and outlet ports (41) are alternately corresponding to the connection ports (21) of the first annular air storage chamber (1) and the second annular air storage chamber (11), a detection component (5) being provided at the top of the vertical tube (3), the detection component (5) comprising a movable plate (52), the movable plate (52) being slidably mounted on the top of the vertical tube (3), and the movable plate (52) being slidably sleeved on the surface of the air inlet and outlet pipe (31), a sliding rod (410) being slidably and sealingly plugged at the center of the plug (42), and one end of the sliding rod (410) being fixedly connected to the outermost end of the transverse tube (2), and the movable plate (52) being drivingly connected to the sliding rod (410).

2. An underground gas storage cavern group and compressed air energy storage system according to claim 1, characterized in that: The connecting component (4) further comprises a sealing ring (43); one end of the inlet and outlet air pipe (31) arranged inside the transverse pipe (2) is slidably plugged into one end of the plug (42); a sealing ring (43) is arranged at a position on the outside of the plug (42) corresponding to the plugging position of the inlet and outlet air pipe (31); and the sealing ring (43) is sealingly sleeved on the periphery of the inlet and outlet air pipe (31).

3. An underground gas storage cavern group and compressed air energy storage system according to claim 2, characterized in that: The plug (42) is hollow inside, and a circular plate (48) is rotatably mounted inside the plug (42) corresponding to the air inlet and outlet (41). Two arc plates (49) are symmetrically fixed to the center of the circular plate (48), and the arc plates (49) slide along the inner wall of the plug (42). The two arc plates (49) respectively cover half of the area of ​​the air inlet and outlet (41) on both sides.

4. An underground gas storage cavern group and compressed air energy storage system according to claim 3, characterized in that: The sliding rod (410) has convex strips (411) fixed on both sides of its surface, the circular plate (48) is slidably sleeved on the sliding rod (410) and the convex strips (411), and a sealing ring is provided on the back side of the circular plate (48) at a position corresponding to the convex strips (411) and the sliding rod (410) passing through.

5. An underground gas storage cavern group and compressed air energy storage system according to claim 4, characterized in that: Two groups of winding seats (45) are fixed inside the horizontal tube (2) located between the two vertical rods. The two groups of winding seats (45) are arranged up and down, and a pull rope (44) is wound on the winding shaft of the winding seat (45). The two pull ropes (44) are respectively fixedly connected to the plugs (42) at both ends of the horizontal tube (2). The other end of the plug (42) is fixed to the inner wall of the outermost end of the horizontal tube (2). A first spring (415) is fixed.

6. An underground gas storage cavern group and compressed air energy storage system according to claim 5, characterized in that: A driving motor (47) is fixedly mounted on the inner wall of the transverse tube (2) at a position corresponding to the upper winding seat (45), and an output end of the driving motor (47) is fixedly connected to a winding shaft of the upper winding seat (45). A first gear (46) is rotatably mounted on the other side of the two winding seats (45), the two first gears (46) are meshed and connected, and the first gear (46) is fixedly connected to the winding shaft.

7. An underground gas storage cavern group and compressed air energy storage system according to claim 6, characterized in that: The detection assembly (5) further comprises a suspension rope (53), the suspension rope (53) being fixed to the top of the vertical pipe (3), the bottom of the suspension rope (53) being fixedly connected to the movable plate (52), and a second spring (54) being fixed between the top of the movable plate (52) and the top of the vertical pipe (3).

8. An underground gas storage cavern group and compressed air energy storage system according to claim 7, characterized in that: A second gear (412) is fixed to one end of the sliding rod (410) that passes through the plug (42), and a toothed plate (413) is meshedly connected to one side of the second gear (412), and the toothed plate (413) slides along the inner wall of the vertical pipe (3).

9. An underground gas storage cavern group and compressed air energy storage system according to claim 8, characterized in that: A connecting rod (414) is fixed on the top of the toothed plate (413), and the connecting rod (414) is fixedly passed through the top of the movable plate (52). Transmission ropes (51) are provided at the outer ends of the two vertical tubes (3), and the two ends of the transmission ropes (51) pass through the interior of the vertical tubes (3) and are fixedly connected to the two connecting rods (414).

10. The underground gas storage caverns and compressed air energy storage system according to claim 1, characterized in that: A pressure sensor (32) is installed on the inner wall of the air inlet and outlet pipes (31) passing through the vertical pipe (3).

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