Plugging structure of high-pressure gas storage cavern

Abstract

The utility model discloses a plugging structure of a high-pressure gas storage cavern, which belongs to the technical field of gas storage caverns and comprises a plug, a sealing gate is arranged in the plug, and the sealing gate comprises a sealing gate plate and a sealing gate frame. A cavity is formed in the sealing gate frame, a driving wheel shaft is arranged in the cavity, a driving gear sleeves the driving wheel shaft, a plurality of driven gears are arranged on the peripheral side of the driving gear at intervals, and the driven gears sleeve the driven wheel shaft; a rack is arranged on one side of the driven gear, a second clamping block is arranged at the end of the rack, and trapezoidal grooves are formed in the two sides of the second clamping block. A square groove is formed in the sealing gate frame, a compression spring is arranged in the square groove, a third clamping block is arranged at one end of the compression spring, and the third clamping block is connected with the second clamping block in a clamped mode. The firmness can be ensured in a high-pressure environment, so that the problem of air leakage caused by long-term high-pressure influence is avoided, and the air tightness is good.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas storage caverns, specifically relating to a sealing structure for a high-pressure gas storage cavern. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] An underground gas storage cavern is a spatial structure built underground for storing gases. Its main function is to store large quantities of gases, such as natural gas and liquefied petroleum gas, under certain pressure, playing an important role in regulating gas supply, stabilizing gas sources, and ensuring energy security.

[0004] The following are some common forms of underground cavern sealing structures:

[0005] Concrete sealing walls, typically constructed with reinforced concrete, offer high strength and excellent sealing performance. At the ends of caverns or areas requiring sealing, formwork is erected according to design requirements, followed by concrete pouring to form a robust wall. Masonry sealing may be used in areas with favorable geological conditions and relatively lower strength requirements for the sealing structure. This involves constructing a sealing structure using stones laid with cement mortar. Steel gate sealing is employed for underground caverns with special requirements, such as those needing to be opened or closed under specific conditions. Steel gates offer good sealing and ease of operation.

[0006] For the use of steel gates for sealing, the pressure inside the underground gas storage facility changes frequently and over a wide range, which places high demands on the stability and airtightness of the sealing structure. If the size of the maintenance passage is increased, the pressure on the sealing structure will increase suddenly. If the size is set too small, it will be inconvenient for personnel to enter. In addition, the pressure on the side where the gas is stored is usually higher than the external pressure. Therefore, the steel gate located at the gas-containing end is subject to high pressure for a long time, which makes it easy to be damaged and difficult to guarantee its robustness, thus making it difficult to guarantee airtightness. Utility Model Content

[0007] To address the aforementioned problems, this utility model provides a sealing structure for a high-pressure gas storage cavity, which can ensure robustness under high-pressure conditions, thereby avoiding gas leakage caused by long-term exposure to high pressure, and has good airtightness.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A sealing structure for a high-pressure gas storage cavern includes a plug, and a sealing gate is provided inside the plug. The sealing gate includes a sealing gate plate and a sealing gate frame.

[0010] The sealed gate frame has a cavity, and a drive shaft is installed in the cavity. A drive gear is sleeved on the drive shaft. Several driven gears are spaced apart around the drive gear, and the driven gears are sleeved on the driven shaft. A rack is installed on one side of the driven gear, and a second locking block is installed at the end of the rack. Trapezoidal grooves are installed on both sides of the second locking block. A square groove is installed on the sealed gate frame, and a compression spring is installed in the square groove. A third locking block is installed at one end of the compression spring, and the third locking block engages with the second locking block.

[0011] Furthermore, the drive gear and the drive shaft are movably connected, and the drive shaft and the sealing gate plate are fixedly connected.

[0012] Furthermore, the driven gear and the driven wheel shaft are fixedly connected, the driving wheel shaft and the sealing gate plate are movably connected, and one end of the driving wheel shaft passes through the sealing gate plate and is fixedly connected to the rotating disk.

[0013] Furthermore, a guide rail is provided at one end of the rack, the guide rail and the rack are movably connected, and the guide rail and the sealing gate plate are fixedly connected.

[0014] Furthermore, the plug is provided with first locking blocks at both ends, and the first locking blocks are provided with a plurality of oblique grooves at intervals.

[0015] Furthermore, a third snap-fit ​​block is provided at both ends of the second snap-fit ​​block, and the end of the third snap-fit ​​block has a trapezoidal structure.

[0016] Furthermore, one end of the compression spring is fixedly connected to the third snap-fit ​​block, and the other end of the compression spring is fixedly connected to the inner wall of the square groove.

[0017] Furthermore, the compression springs are spaced out in several increments.

[0018] Furthermore, a plurality of hinged joints are provided at intervals at one end of the sealing gate plate, and the sealing gate plate and the sealing gate frame are connected by the hinged joints.

[0019] Furthermore, a handle is provided at one end of the rotating disk, and the handle is fixedly connected to the sealing gate plate; several ribs are provided at both ends inside the sealing gate plate.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are:

[0021] This invention ensures robustness through the cooperation of a driving gear, driven gear, rack, first locking block, second locking block, and third locking block inside the sealing gate plate. Specifically, a rotating disc drives the driving wheel shaft to rotate, which in turn drives the driving gear. The driving gear then drives the driven gear, which in turn rotates on its shaft. This causes the rack to move along a guide rail, which in turn moves the second locking block into the square groove, thus engaging the second and third locking blocks. When one end is under high pressure, the second locking block engages with the square groove, and the second and third locking blocks further engage, increasing the robustness of the connection between the sealing gate frame and the sealing gate plate. This allows the gate to withstand high pressure on one side of the cavern, maintaining robustness under high pressure and preventing air leakage caused by prolonged exposure to high pressure, resulting in excellent airtightness.

[0022] This utility model is equipped with a first locking block, on which multiple oblique grooves are provided to hook the surrounding rock, effectively preventing slippage caused by high pressure and making the plug more securely fixed. Attached Figure Description

[0023] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0024] Figure 1 This is a perspective view of the sealing structure of the high-pressure gas storage cavity of this utility model;

[0025] Figure 2 This is an internal structural diagram of the sealing structure of the high-pressure gas storage cavity of this utility model;

[0026] Figure 3 This is a schematic diagram of the snap-fit ​​state of the second snap-fit ​​block of this utility model;

[0027] Figure 4 This is a structural diagram of the first snap-fit ​​block of this utility model;

[0028] In the diagram: 1. Plug; 2. Sealing gate frame; 3. Sealing gate plate; 4. Hinged joint; 5. Rotating disk; 6. Handle; 7. First locking block; 8. Driving wheel axle; 9. Driving gear; 10. Driven wheel axle; 11. Driven gear; 12. Rack; 13. Guide rail; 14. Second locking block; 15. Trapezoidal groove; 16. Third locking block; 17. Square groove; 18. Compression spring; 19. Angled groove; 20. Rib plate. Detailed Implementation

[0029] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0030] For the use of steel gates for sealing, the pressure inside the underground gas storage facility changes frequently and over a wide range, which places high demands on the stability and airtightness of the sealing structure. If the size of the maintenance passage is increased, the pressure on the sealing structure will increase suddenly. If the size is set too small, it will be inconvenient for personnel to enter. In addition, the pressure on the side where the gas is stored is usually higher than the external pressure. Therefore, the steel gate located at the gas-containing end is subject to high pressure for a long time, which makes it easy to be damaged and difficult to guarantee its robustness, thus making it difficult to guarantee airtightness.

[0031] The present invention will now be described in detail with reference to the accompanying drawings. This embodiment discloses a sealing structure for a high-pressure gas storage cavity, such as... Figure 1 As shown, it includes a plug 1, and a sealing gate is provided inside the plug 1. The sealing gate includes a sealing gate plate 3 and a sealing gate frame 2.

[0032] The sealing gate frame 2 has a cavity inside, and a drive shaft 8 is installed inside the cavity. A drive gear 9 is sleeved on the drive shaft 8. Several driven gears 11 are arranged at intervals around the drive gear 9. The driven gears 11 are sleeved on the driven shaft 10. A rack 12 is provided on one side of the driven gear 11. A second locking block 14 is provided at the end of the rack 12. Trapezoidal grooves 15 are provided on both sides of the second locking block 14. A square groove 17 is provided on the sealing gate frame 2. A compression spring 18 is installed in the square groove 17. A third locking block 16 is provided at one end of the compression spring 18. The third locking block 16 is engaged with the second locking block 14.

[0033] Specifically, plug 1 is installed at the opening of the gas storage chamber to seal the opening, and a channel is provided on plug 1; a sealing gate is installed on plug 1, and by opening the sealing gate, one can enter the channel of plug 1 and then enter the interior of the chamber. In order to prevent air leakage at the contact point between the sealing gate frame 2 and the sealing gate plate 3, sealing gaskets are provided at the contact point of both.

[0034] Specifically, the high pressure inside the gas storage cavern can cause the gate plate to loosen over a long period of time. To ensure its stability, the gate plate 3 is sealed by the cooperation of the drive gear 9, driven gear 11, rack 12, first locking block 7, second locking block 14, and third locking block 16. That is, the rotating disk 5 drives the drive wheel shaft 8 to rotate, which in turn drives the drive gear 9 to rotate. The drive gear 9 drives the driven gear 11 to rotate. The driven gear 11 rotates on the driven wheel shaft 10, which in turn causes the rack 12 to move on the guide rail 13. The rack 12 then drives the second locking block 14 to move into the square groove 17, which in turn causes the second locking block 14 and the third locking block 16 to engage.

[0035] When one end is subjected to high pressure, the second snap-fit ​​block 14 and the square groove 17 are used to snap the connection, and the second snap-fit ​​block 14 and the third snap-fit ​​block 16 are used to further snap the connection, which increases the firmness of the connection between the sealing gate frame 2 and the sealing gate plate 3, thereby bearing the high pressure on one side of the cavern. It can ensure firmness under high pressure environment, thereby avoiding air leakage caused by long-term high pressure, and has good air tightness.

[0036] like Figure 2 As shown, the driving gear 9 and the driving shaft 8 are movably connected, and the driving shaft 8 and the sealing gate plate 3 are fixedly connected. The driven gear 11 and the driven shaft 10 are fixedly connected, and the driving shaft 8 and the sealing gate plate 3 are movably connected. One end of the driving shaft 8 passes through the sealing gate plate 3 and is fixedly connected to the rotating disk 5.

[0037] A guide rail 13 is provided at one end of the rack 12. The guide rail 13 and the rack 12 are movably connected. The guide rail 13 and the sealing gate plate 3 are fixedly connected.

[0038] Specifically, the guide rail 13 provides guidance for the rack 12, ensuring that the rack 12 moves along a straight square. At the same time, the driven gear 11 meshes with the rack 12, which also ensures that the position of the rack 12 remains unchanged after movement, thus having a limiting function. When the driven gear 11 rotates, the rack 12 can move toward or away from the square groove 17.

[0039] like Figure 4 As shown, the plug 1 has first locking blocks 7 at both ends, and several oblique grooves 19 are provided on the first locking blocks 7 at intervals. The multiple oblique grooves 19 on the first locking blocks 7 hook the surrounding rock, effectively preventing slippage caused by high pressure, and making the plug 1 more firmly fixed.

[0040] Specifically, anchor bolts can be installed, with appropriate densification at key locations such as the top, middle, and bottom of the sealing structure. For example, anchor bolts at the top can effectively prevent the sealing structure from moving upwards or overturning due to lateral forces; anchor bolts in the middle can enhance the overall stability of the sealing structure and resist horizontal thrust; and anchor bolts at the bottom can prevent lateral sliding at the bottom of the sealing structure.

[0041] like Figure 3 As shown, a third locking block 16 is provided at both ends of the second locking block 14, and the end of the third locking block 16 has a trapezoidal structure. One end of the compression spring 18 is fixedly connected to the third locking block 16, and the other end of the compression spring 18 is fixedly connected to the inner wall of the square groove 17. Several compression springs 18 are arranged at intervals.

[0042] Specifically, in the initial state, the compression spring 18 is in a free state. When the second locking block 14 moves upward, the upper end of the second locking block 14 presses against the lower end face of the third locking block 16, thereby pushing the third locking block 16 into the square groove 17. At this time, the compression spring 18 is compressed. As the second locking block 14 continues to move upward, the third locking block 16 is gradually pushed into the trapezoidal groove 15 by the compression spring 18, thereby realizing the locking of the second locking block 14 and the third locking block 16. The sealing gate plate 3 and the sealing gate frame 2 are in a locked state.

[0043] When it is necessary to release the locking state, the second locking block 14 moves downward, so that the third locking block 16 is gradually pushed into the square groove 17, and then the third locking block 16 gradually disengages from the trapezoidal groove 15, thereby restoring the spring to a free state and releasing the locking state between the sealing gate plate 3 and the sealing gate frame 2.

[0044] Furthermore, to ensure airtightness, sealing gaskets can be installed in the second snap-fit ​​block 14, the third snap-fit ​​block 16, the rectangular groove, and the trapezoidal groove 15 to prevent air leakage.

[0045] A number of hinged joints 4 are spaced apart at one end of the sealing gate plate 3, and the sealing gate plate 3 and the sealing gate frame 2 are connected by the hinged joints 4. A handle 6 is provided at one end of the rotating disk 5, and the handle 6 is fixedly connected to the sealing gate plate 3.

[0046] Specifically, the gear is rotated by rotating the disc 5 to achieve a locked or unlocked state. When the locked state is released, the handle 6 is pulled to make the sealing gate plate 3 rotate along the hinge 4, which opens the sealing gate.

[0047] Several ribs 20 are provided at both ends inside the sealing gate plate 3. Because the sealing gate plate 3 has a cavity, the ribs are provided to support the inner wall of the cavity to prevent it from being affected by high pressure and to improve its strength.

[0048] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A sealing structure for a high-pressure gas storage cavity, characterized in that, The device includes a plug, and a sealing gate is provided inside the plug. The sealing gate includes a sealing gate plate and a sealing gate frame. The sealed gate frame has a cavity, and a drive shaft is installed in the cavity. A drive gear is sleeved on the drive shaft. Several driven gears are spaced apart around the drive gear, and the driven gears are sleeved on the driven shaft. A rack is installed on one side of the driven gear, and a second locking block is installed at the end of the rack. Trapezoidal grooves are installed on both sides of the second locking block. A square groove is installed on the sealed gate frame, and a compression spring is installed in the square groove. A third locking block is installed at one end of the compression spring, and the third locking block engages with the second locking block.

2. The sealing structure for a high-pressure gas storage cavity as described in claim 1, characterized in that, The drive gear and drive shaft are movably connected, and the drive shaft and sealing gate plate are fixedly connected.

3. The sealing structure for a high-pressure gas storage cavity as described in claim 1, characterized in that, The driven gear and the driven wheel axle are fixedly connected, the driving wheel axle and the sealing gate plate are movably connected, and one end of the driving wheel axle passes through the sealing gate plate and is fixedly connected to the rotating disk.

4. The sealing structure for a high-pressure gas storage cavity as described in claim 1, characterized in that, One end of the rack is provided with a guide rail, the guide rail and the rack are movably connected, and the guide rail and the sealing gate plate are fixedly connected.

5. The sealing structure for a high-pressure gas storage cavity as described in claim 1, characterized in that, The plug is provided with first locking blocks at both ends, and the first locking blocks are provided with a number of oblique grooves at intervals.

6. The sealing structure for a high-pressure gas storage cavity as described in claim 1, characterized in that, The second snap-fit ​​block has a third snap-fit ​​block at both ends, and the ends of the third snap-fit ​​block are trapezoidal structures.

7. The sealing structure for a high-pressure gas storage cavity as described in claim 1, characterized in that, One end of the compression spring is fixedly connected to the third snap-fit ​​block, and the other end of the compression spring is fixedly connected to the inner wall of the square groove.

8. The sealing structure for a high-pressure gas storage cavity as described in claim 1, characterized in that, The compression springs are spaced out in several increments.

9. The sealing structure for a high-pressure gas storage cavity as described in claim 1, characterized in that, A plurality of hinged joints are provided at intervals at one end of the sealing gate plate, and the sealing gate plate and the sealing gate frame are connected by the hinged joints.

10. The sealing structure for a high-pressure gas storage cavity as described in claim 3, characterized in that, A handle is provided at one end of the rotating disk, and the handle is fixedly connected to the sealing gate plate; several ribs are provided at both ends inside the sealing gate plate.

Images