Sealing structure of gravity compressed air energy storage system

Abstract

The utility model discloses a gravity compressed air energy storage system sealing structure which comprises a vertical shaft and a sealing film, the vertical shaft is composed of an upper cylindrical well cavity and a lower cylindrical well cavity which are different in diameter, the upper side well cavity is larger than the lower side well cavity, so that a mounting table is formed at the joint of the upper side well cavity and the lower side well cavity, and a cylindrical gravity block is inserted into the vertical shaft. The sealing film is of an annular cylinder structure, and the two ends of the sealing film are fixed to the mounting table and the side wall of the bottom end of the gravity block correspondingly. The installation structure of the sealing film is improved, the end portions of the sealing film are fixed through the clamping structures and the bolts, installation is convenient, and operation is easy; and the annular frame and the bolt structure are horizontally fixed, so that the sealing performance can be effectively improved, the folding angle of the sealing film can be reduced, and the service life of the sealing film is prolonged.

Description

Technical Field

[0001] This utility model relates to a sealing structure for a gravity compressed air energy storage system, belonging to the field of compressed air energy storage technology. Background Technology

[0002] Gravity compressed air energy storage cleverly combines the advantages of gravity energy storage and conventional compressed air energy storage, avoiding their respective disadvantages. It meets our requirements for energy storage systems with large capacity, low cost, long lifespan, high efficiency, strong safety, fast adjustment speed, minimal environmental impact, and flexible deployment. In existing technologies, traditional compressed air energy storage systems suffer from difficult sealing membrane design, complex installation structures, and inconvenient installation, and are prone to sealing instability during use. This application proposes a sealing structure for a gravity compressed air energy storage system, solving the problems of complex sealing installation structures, time-consuming and labor-intensive installation, and unstable sealing in traditional compressed air energy storage systems. Utility Model Content

[0003] The purpose of this invention is to provide a sealing structure for a gravity compressed air energy storage system. By improving the installation structure of the sealing membrane, the installation difficulty is reduced, while the service life of the sealing membrane is increased and the sealing performance is improved.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a sealing structure for a gravity compressed air energy storage system, comprising a vertical shaft and a sealing membrane, wherein the vertical shaft is composed of two cylindrical well cavities with different diameters, the upper well cavity being larger than the lower well cavity so that their connection forms an mounting platform, a cylindrical gravity block is inserted into the vertical shaft, and the sealing membrane is an annular cylindrical structure, with both ends of the sealing membrane fixed to the mounting platform and the bottom sidewall of the gravity block, respectively;

[0005] The mounting platform has a ring-shaped lower clamping plate on its upper surface and an upper clamping plate above the lower clamping plate. The outer end of the sealing film is clamped between the lower clamping plate and the upper clamping plate, and the ends of the lower clamping plate and the upper clamping plate away from the sealing film are fixed by bolts. The sealing film is fixed to the lower clamping plate and the upper clamping plate by bolts located on the upper part.

[0006] A fixing plate is provided at the bottom of the gravity block, and the fixing plate is fixed to the bottom end of the gravity block by bolts. The inner end of the sealing film is clamped between the gravity block and the fixing plate, and the sealing film is fixed to the fixing plate and the gravity block by bolts provided above.

[0007] In the aforementioned gravity compressed air energy storage system sealing structure, both ends of the sealing membrane are provided with annular frames, and the ends of the sealing membrane are bent and wrapped around the outer surface of the annular frames;

[0008] The contact surface between the lower clamping plate and the upper clamping plate is provided with a circular groove corresponding to the annular frame, and the annular frame covered by the outer end of the sealing film is placed in the circular groove between the lower clamping plate and the upper clamping plate.

[0009] The contact surface between the gravity block and the fixed plate is provided with a circular groove corresponding to the annular frame, and the annular frame covered by the inner end of the sealing film is placed in the circular groove between the gravity block and the fixed plate.

[0010] The ring frame makes the sealing membrane more stable and less prone to detachment, and also increases the thickness at the end of the sealing membrane, resulting in a better sealing effect.

[0011] In the aforementioned gravity compressed air energy storage system sealing structure, a groove is provided on the bottom side wall of the gravity block. The bolt between the gravity block and the fixing plate is placed in the groove and passes through the gravity block and the fixing plate downward for fixation. The groove is located above the sealing membrane, which makes the installation operation easier.

[0012] In the aforementioned sealing structure of a gravity compressed air energy storage system, the length of the bolt between the gravity block and the fixed plate is greater than the height of the groove, preventing the bolt from being disassembled and removed from the groove, which would make subsequent installation inconvenient. Furthermore, a limiting block can be set at the bottom of the bolt to prevent the bolt from detaching from the fixed plate, thus allowing adjustment of the gap between the gravity block and the fixed plate.

[0013] In the aforementioned sealing structure of a gravity compressed air energy storage system, the inner surfaces of the lower and upper clamping plates that contact the sealing membrane are in a smooth arc shape, and the outer surfaces of the gravity block and the fixing plate that contact the sealing membrane are in a smooth arc shape. This prevents the sealing membrane from being damaged due to repeated bending and friction, and improves the service life of the sealing membrane.

[0014] In the aforementioned gravity compressed air energy storage system sealing structure, a reinforcing plate is provided on the inner side of the annular frame between the lower clamping plate and the upper clamping plate in the horizontal direction. The folded sealing film is placed on the upper and lower sides of the reinforcing plate, and a sealant is provided between the reinforcing plate and the sealing film.

[0015] A reinforcing plate is provided on the outer side of the annular frame between the gravity block and the fixed plate in the horizontal direction. The folded sealing film is placed on the upper and lower sides of the reinforcing plate, and a sealant is provided between the reinforcing plate and the sealing film.

[0016] To improve the sealing performance at the installation point of the sealing membrane, sealant can also be applied to the contact gaps between the lower clamping plate, upper clamping plate, gravity block, fixing plate and the sealing membrane to further improve the sealing performance.

[0017] In the aforementioned sealing structure of a gravity compressed air energy storage system, the folded ends of the sealing membrane extend out between the lower clamping plate and the upper clamping plate, as well as between the gravity block and the fixed plate.

[0018] Compared with the prior art, this utility model improves the installation structure of the sealing film by using a clamping structure and bolts to fix the ends of the sealing film, which makes installation convenient and operation simple. The use of a ring frame and bolt structure for horizontal fixation can effectively improve the sealing performance, while also reducing the folding angle of the sealing film and increasing its service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the installation structure of the lower clamping plate and the upper clamping plate of this utility model;

[0021] Figure 3 This is a schematic diagram of the installation structure of the gravity block and fixing plate of this utility model;

[0022] Figure 4 This is a schematic diagram of the ring frame structure of this utility model;

[0023] Figure 5 yes Figure 4 Cross-sectional view at point A.

[0024] Attached reference numerals: 1-vertical shaft, 2-sealing membrane, 3-mounting platform, 4-gravity block, 5-lower clamping plate, 6-upper clamping plate, 7-fixing plate, 8-ring frame, 9-circular groove, 10-groove, 11-reinforcing plate.

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0026] Embodiment 1 of this utility model: A sealing structure for a gravity compressed air energy storage system, comprising a vertical shaft 1 and a sealing membrane 2. The vertical shaft 1 is composed of two cylindrical well cavities with different diameters, the upper well cavity being larger than the lower well cavity so that the connection point forms an mounting platform 3. A cylindrical gravity block 4 is inserted into the vertical shaft 1. The sealing membrane 2 has an annular cylindrical structure, and the two ends of the sealing membrane 2 are respectively fixed to the mounting platform 3 and the bottom side wall of the gravity block 4.

[0027] The mounting platform 3 has a ring-shaped lower clamping plate 5 on its upper surface and an upper clamping plate 6 above the lower clamping plate 5. The outer end of the sealing film 2 is clamped between the lower clamping plate 5 and the upper clamping plate 6, and the ends of the lower clamping plate 5 and the upper clamping plate 6 away from the sealing film 2 are fixed by bolts. The sealing film 2 is fixed to the lower clamping plate 5 and the upper clamping plate 6 by the bolts set on the upper part.

[0028] The bottom of the gravity block 4 is provided with a fixing plate 7, which is fixed to the bottom of the gravity block 4 by bolts. The inner end of the sealing film 2 is clamped between the gravity block 4 and the fixing plate 7, and the sealing film 2 is fixed to the fixing plate 7 and the gravity block 4 by bolts set above.

[0029] Embodiment 2 of this utility model: A sealing structure for a gravity compressed air energy storage system, including a vertical shaft 1 and a sealing membrane 2. The vertical shaft 1 is composed of two cylindrical well cavities with different diameters, the upper well cavity being larger than the lower well cavity so that the connection point forms an mounting platform 3. A cylindrical gravity block 4 is inserted into the vertical shaft 1. The sealing membrane 2 has an annular cylindrical structure, and the two ends of the sealing membrane 2 are respectively fixed to the mounting platform 3 and the bottom side wall of the gravity block 4.

[0030] Both ends of the sealing membrane 2 are provided with annular frames 8, and the ends of the sealing membrane 2 are bent and wrapped around the outer surface of the annular frames 8.

[0031] The mounting platform 3 has an annular lower clamping plate 5 on its upper surface and an upper clamping plate 6 above the lower clamping plate 5. The outer end of the sealing film 2 is clamped between the lower clamping plate 5 and the upper clamping plate 6, and the ends of the lower clamping plate 5 and the upper clamping plate 6 away from the sealing film 2 are fixed by bolts. The sealing film 2 is fixed to the lower clamping plate 5 and the upper clamping plate 6 by the bolts set above. Furthermore, the contact surface between the lower clamping plate 5 and the upper clamping plate 6 is provided with a circular groove 9 corresponding to the annular frame 8, and the annular frame 8 covered by the outer end of the sealing film 2 is placed in the circular groove 9 between the lower clamping plate 5 and the upper clamping plate 6.

[0032] The bottom of the gravity block 4 is provided with a fixing plate 7, which is fixed to the bottom end of the gravity block 4 by bolts. The inner end of the sealing film 2 is clamped between the gravity block 4 and the fixing plate 7. The sealing film 2 is fixed to the fixing plate 7 and the gravity block 4 by bolts provided above. The contact surface between the gravity block 4 and the fixing plate 7 is provided with a circular groove 9 corresponding to the annular frame 8, and the annular frame 8 covered by the inner end of the sealing film 2 is placed in the circular groove 9 between the gravity block 4 and the fixing plate 7.

[0033] The ring frame 8 makes the sealing membrane 2 more stable and less likely to come off, and increases the thickness at the end of the sealing membrane 2, resulting in a better sealing effect.

[0034] Embodiment 3 of this utility model: A sealing structure for a gravity compressed air energy storage system, including a vertical shaft 1 and a sealing membrane 2. The vertical shaft 1 is composed of two cylindrical well cavities with different diameters, the upper well cavity being larger than the lower well cavity so that the connection point forms an mounting platform 3. A cylindrical gravity block 4 is inserted into the vertical shaft 1. The sealing membrane 2 has an annular cylindrical structure, and the two ends of the sealing membrane 2 are respectively fixed to the mounting platform 3 and the bottom side wall of the gravity block 4.

[0035] Both ends of the sealing membrane 2 are provided with annular frames 8, and the ends of the sealing membrane 2 are bent and wrapped around the outer surface of the annular frames 8.

[0036] The mounting platform 3 has a ring-shaped lower clamping plate 5 on its upper surface, and an upper clamping plate 6 above the lower clamping plate 5. The outer end of the sealing film 2 is clamped between the lower clamping plate 5 and the upper clamping plate 6, and the ends of the lower clamping plate 5 and the upper clamping plate 6 away from the sealing film 2 are fixed by bolts. The sealing film 2 is fixed to the lower clamping plate 5 and the upper clamping plate 6 by the bolts set above. Furthermore, the contact surface between the lower clamping plate 5 and the upper clamping plate 6 is provided with a circular groove 9 corresponding to the annular frame 8, and the annular frame 8 covered by the outer end of the sealing film 2 is placed in the circular groove 9 between the lower clamping plate 5 and the upper clamping plate 6. A reinforcing plate 11 is provided horizontally on the inner side of the annular frame 8 between the lower clamping plate 5 and the upper clamping plate 6. The folded sealing film 2 is placed on the upper and lower sides of the reinforcing plate 11, and a sealant is provided between the reinforcing plate 11 and the sealing film 2.

[0037] A fixing plate 7 is provided at the bottom of the gravity block 4. The fixing plate 7 is fixed to the bottom end of the gravity block 4 by bolts. The inner end of the sealing film 2 is clamped between the gravity block 4 and the fixing plate 7. The sealing film 2 is fixed to the fixing plate 7 and the gravity block 4 by bolts provided above. The contact surface between the gravity block 4 and the fixing plate 7 is provided with a circular groove 9 corresponding to the annular frame 8. The annular frame 8 covered by the inner end of the sealing film 2 is placed in the circular groove 9 between the gravity block 4 and the fixing plate 7. A reinforcing plate 11 is provided horizontally on the outer side of the annular frame 8 between the gravity block 4 and the fixing plate 7. The folded sealing film 2 is placed on the upper and lower sides of the reinforcing plate 11. A sealant is provided between the reinforcing plate 11 and the sealing film 2.

[0038] The ring frame 8 makes the sealing membrane 2 more stable and less prone to detachment, and increases the thickness at the end of the sealing membrane 2 for better sealing effect. The sealant improves the sealing performance at the installation point of the sealing membrane 2. The sealant can also be applied to the contact gaps between the lower clamping plate 5, the upper clamping plate 6, the gravity block 4, the fixing plate 7 and the sealing membrane 2 to further improve the sealing performance.

[0039] The gravity block 4 has a groove 10 on its bottom side wall. The bolt between the gravity block 4 and the fixing plate 7 is placed in the groove 10 and passes through the gravity block 4 and the fixing plate 7 for fixing. The groove 10 is above the sealing membrane 2, which makes the installation operation easier. The length of the bolt between the gravity block 4 and the fixing plate 7 is greater than the height of the groove 10 to prevent the bolt from being removed from the groove 10, which would make subsequent installation inconvenient. In addition, a limit block can be set at the bottom of the bolt to prevent the bolt from falling off the fixing plate 7, and the gap between the gravity block 4 and the fixing plate 7 can be adjusted.

[0040] Specifically, the contact surfaces between the inner ends of the lower clamping plate 5 and the upper clamping plate 6 and the sealing film 2 are in a smooth arc shape, and the contact surfaces between the outer ends of the gravity block 4 and the fixing plate 7 and the sealing film 2 are in a smooth arc shape, to prevent the sealing film 2 from being damaged due to repeated bending and friction, and to improve the service life of the sealing film 2.

[0041] Specifically, the folded ends of the sealing film 2 extend out between the lower clamping plate 5 and the upper clamping plate 6, as well as between the gravity block 4 and the fixing plate 7.

[0042] The working principle of one embodiment of this utility model is as follows: In the process of use, the two ends of the sealing film 2 are first wrapped around the corresponding annular frame 8 and folded to a suitable length. Then, sealant is applied to the reinforcing plate 11, and the sealing film 2 is fixedly attached to the reinforcing plate 11. The outer annular frame 8 is placed in the circular groove 9 between the lower clamping plate 5 and the upper clamping plate 6, and then fixed with bolts. Next, the bolts in the groove 10 are rotated to increase the gap between the gravity block 4 and the fixing plate 7. Then, the inner annular frame 8 is placed in the circular groove 9 between the gravity block 4 and the fixing plate 7, and the bolts in the groove 10 are rotated to tighten the gravity block 4 and the fixing plate 7, thus completing the installation of the sealing film 2. The installation is simple and convenient, the sealing performance is strong, and it is not necessary to enter the air storage chamber below the gravity block 4.

Claims

1. A sealing structure for a gravity compressed air energy storage system, characterized in that, The device includes a vertical shaft (1) and a sealing membrane (2). The vertical shaft (1) is composed of two cylindrical well cavities with different diameters. The upper well cavity is larger than the lower well cavity, so that the connection point forms an installation platform (3). A cylindrical gravity block (4) is inserted into the vertical shaft (1). The sealing membrane (2) has an annular cylindrical structure. The two ends of the sealing membrane (2) are respectively fixed to the installation platform (3) and the bottom side wall of the gravity block (4). The upper surface of the installation platform (3) is provided with an annular lower clamping plate (5). An upper clamping plate (6) is provided above the lower clamping plate (5). The outer end of the sealing membrane (2) is clamped between the lower clamping plate (5) and the upper clamping plate (6). The ends of the lower clamping plate (5) and the upper clamping plate (6) away from the sealing membrane (2) are fixed by bolts. The bottom of the gravity block (4) is provided with a fixing plate (7), which is fixed to the bottom end of the gravity block (4) by bolts. The inner end of the sealing film (2) is clamped between the gravity block (4) and the fixing plate (7).

2. The sealing structure of a gravity compressed air energy storage system according to claim 1, characterized in that, Both ends of the sealing membrane (2) are provided with annular frames (8), and the ends of the sealing membrane (2) are bent and wrapped around the outer surface of the annular frame (8); the contact surface between the lower clamping plate (5) and the upper clamping plate (6) is provided with a circular groove (9) corresponding to the annular frame (8), and the annular frame (8) covered by the outer end of the sealing membrane (2) is placed in the circular groove (9) between the lower clamping plate (5) and the upper clamping plate (6); the contact surface between the gravity block (4) and the fixing plate (7) is provided with a circular groove (9) corresponding to the annular frame (8), and the annular frame (8) covered by the inner end of the sealing membrane (2) is placed in the circular groove (9) between the gravity block (4) and the fixing plate (7).

3. The sealing structure of a gravity compressed air energy storage system according to claim 2, characterized in that, The bottom side wall of the gravity block (4) is provided with a groove (10), and the bolt between the gravity block (4) and the fixing plate (7) is placed in the groove (10) and passes through the gravity block (4) and the fixing plate (7) to fix it.

4. The sealing structure of a gravity compressed air energy storage system according to claim 3, characterized in that, The length of the bolt between the gravity block (4) and the fixing plate (7) is greater than the height of the groove (10).

5. The sealing structure of a gravity compressed air energy storage system according to claim 2, characterized in that, The inner ends of the lower clamping plate (5) and the upper clamping plate (6) have a smooth arc-shaped contact surface with the sealing film (2), and the outer ends of the gravity block (4) and the fixing plate (7) have a smooth arc-shaped contact surface with the sealing film (2).

6. The sealing structure of a gravity compressed air energy storage system according to claim 2, characterized in that, A reinforcing plate (11) is provided horizontally on the inner side of the annular frame (8) between the lower clamping plate (5) and the upper clamping plate (6). The folded sealing film (2) is placed on the upper and lower sides of the reinforcing plate (11), and a sealant is provided between the reinforcing plate (11) and the sealing film (2). A reinforcing plate (11) is provided horizontally on the outer side of the annular frame (8) between the gravity block (4) and the fixing plate (7). The folded sealing film (2) is placed on the upper and lower sides of the reinforcing plate (11), and a sealant is provided between the reinforcing plate (11) and the sealing film (2).

7. The sealing structure of a gravity compressed air energy storage system according to claim 1, characterized in that, The ends of the folded sealing film (2) extend between the lower clamping plate (5) and the upper clamping plate (6) and between the gravity block (4) and the fixing plate (7).

Images