An air energy storage packer

Abstract

This utility model relates to the field of air energy storage well injection and production technology, and discloses an air energy storage packer, including a central tube. A hydraulic cylinder is fixedly installed on the bottom outer surface of the mounting plate. An air storage bladder is fixedly sleeved on the outer surface of the central tube. A piston disc is fixedly connected to the output end of the hydraulic cylinder. Two compression cylinders are fixedly sleeved on the outer surface of the central tube below the air storage bladder. When the hydraulic cylinder operates, it drives the piston disc to compress the air pressure inside the connecting cylinder into the air storage bladder, increasing the pressure inside the bladder. This causes the plug to disengage from the connecting tube, opening the connecting tube and allowing air pressure to enter the interior of the compression cylinders. Utilizing the compressibility and elasticity of gas to store energy, the compression cylinders' elasticity is replenished, thus maintaining their deformation and external pressure, achieving continuous sealing and ensuring reliable operation of the packer, preventing incomplete sealing or loss of seal.

Description

Technical Field

[0001] This utility model relates to the field of air energy storage well injection and production technology, specifically an air energy storage packer. Background Technology

[0002] With the continuous growth of current energy demand and the ongoing promotion of renewable energy, energy storage technology has become an important way to resolve energy fluctuations and balance the contradiction between energy supply and demand. Air-based energy storage power generation technology, due to its advantages such as high efficiency, environmental friendliness, and flexibility, is increasingly becoming one of the key technologies in the energy storage industry. The core concept of air-based energy storage power generation technology is to compress and store air when there is excess electricity, and release the stored compressed air to drive a turbine to generate electricity when energy demand increases. This energy storage method has high power density and a long storage period, and can provide continuous power output during peak demand periods in the power system, effectively solving the problems of intermittency and volatility in renewable energy power generation.

[0003] Some packers are sealed by compressing a rubber sleeve, which deforms and expands to close the packer. After the pressure is released, the oil sleeve annulus seal is maintained by the residual pressure inside the packer and the elasticity of the rubber sleeve itself. In field use, the residual pressure and the elasticity of the rubber sleeve may be insufficient to maintain the pressure of the rubber sleeve on the bushing, often resulting in poor sealing or loss of seal. Therefore, an air energy storage packer is proposed. Summary of the Invention

[0004] In view of the shortcomings of the prior art, this utility model provides an air energy storage packer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an air energy storage packer, comprising a central tube, an upper connector fixedly connected to the top end of the central tube, a lower connector fixedly connected to the bottom end of the central tube, a valve installed inside the central tube, a connecting end fixedly sleeved on the outer surface of the central tube near the top end, an installation plate fixedly connected to the inside of the connecting end, a hydraulic cylinder fixedly installed on the bottom outer surface of the installation plate, a connecting cylinder fixedly connected to the inner surface of the connecting end, an air storage bladder fixedly sleeved on the outer surface of the central tube, the connecting cylinder communicating with the interior of the air storage bladder, a piston disc fixedly connected to the output end of the hydraulic cylinder, the piston disc movably connected to the interior of the connecting cylinder, two compression rubber cylinders fixedly sleeved on the outer surface of the central tube below the air storage bladder, the two compression rubber cylinders communicating with each other, a connecting pipe fixedly communicating on the bottom outer surface of the air storage bladder, the connecting pipe communicating with one of the compression rubber cylinders.

[0006] Furthermore, a connecting plate is fixedly connected to the inner surface of the connecting pipe, a movable rod is movably inserted into the outer surface of the connecting plate, a blocking block is fixedly connected to the bottom outer surface of the movable rod, a spring is fixedly connected between the blocking block and the connecting plate, and the spring is sleeved on the outside of the movable rod.

[0007] Furthermore, both of the compression cylinders are made of nitrile rubber.

[0008] Furthermore, O-rings are provided at both the port of the upper connector and the port of the lower connector.

[0009] Furthermore, a through groove is formed on the outer surface of the connecting plate.

[0010] Furthermore, the plug is a frustum-shaped block that is thinner at the top and thicker at the bottom, and a sealing gasket is fixedly connected to the outer surface of the plug.

[0011] Furthermore, when the pressure inside the air reservoir is balanced, the spring is in a balanced state.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This air-storage packer operates via a hydraulic cylinder. The hydraulic cylinder drives a piston disc to compress the air pressure inside the connecting cylinder into the air storage bladder. This increases the pressure inside the air storage bladder, causing the plug to disengage from the connecting pipe and opening the connecting pipe. This allows the air pressure to enter the interior of the compressed rubber cylinder. Utilizing the compressibility and elasticity of gas to store energy, the packer replenishes the elasticity of the compressed rubber cylinder, thereby maintaining the deformation of the compressed rubber cylinder and the external pressure, achieving continuous sealing and ensuring reliable operation of the packer, preventing incomplete sealing or loss of seal. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0016] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] In the diagram: 1. Central tube; 2. Upper connector; 3. Connecting end; 4. Hydraulic cylinder; 5. Air reservoir; 6. Connecting cylinder; 7. Piston disc; 8. Compression rubber cylinder; 9. Connecting tube; 10. Block; 11. Spring; 12. Connecting disc. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please refer to the following: Figures 1-3 This utility model provides a technical solution: an air energy storage packer, including a central tube 1, an upper connector 2 fixedly connected to the top end of the central tube 1, a lower connector fixedly connected to the bottom end of the central tube 1, a valve installed inside the central tube 1, a connecting end 3 fixedly sleeved on the outer surface of the central tube 1 near the top end, an installation plate fixedly connected inside the connecting end 3, a hydraulic cylinder 4 fixedly installed on the bottom outer surface of the installation plate, a connecting cylinder 6 fixedly connected to the inner surface of the connecting end 3, an air storage bladder 5 fixedly sleeved on the outer surface of the central tube 1, the connecting cylinder 6 communicating with the interior of the air storage bladder 5, a piston disc 7 fixedly connected to the output end of the hydraulic cylinder 4, the piston disc 7 movably connected to the interior of the connecting cylinder 6, and two compression rubber cylinders 8 fixedly sleeved on the outer surface of the central tube 1 below the air storage bladder 5. The components 8 are interconnected. A connecting pipe 9 is fixedly connected to the bottom outer surface of the air reservoir 5. The connecting pipe 9 is connected to one of the compression cylinders 8. Specifically, the upper connector 2 connects to the upper structure of the wellbore, and the lower connector connects to the lower structure of the wellbore. During sealing, the hydraulic cylinder 4 works, driving the piston disc 7 to move. This causes the piston disc 7 to move inside the connecting cylinder 6, applying pressure to the inside of the air reservoir 5. Under this pressure, the gas inside the air reservoir 5 enters the inside of the compression cylinder 8 from the inside of the connecting pipe 9. Utilizing the compressibility and elasticity of gas to store energy, the elasticity of the compression cylinder 8 is replenished, thereby maintaining the deformation of the compression cylinder 8 and the external pressure of the compression cylinder 8, achieving continuous sealing and ensuring the reliable operation of the packer, avoiding incomplete sealing or loss of seal.

[0020] In this embodiment, a connecting plate 12 is fixedly connected to the inner surface of the connecting pipe 9, and a movable rod is movably inserted into the outer surface of the connecting plate 12. A blocking block 10 is fixedly connected to the bottom outer surface of the movable rod, and a spring 11 is fixedly connected between the blocking block 10 and the connecting plate 12. The spring 11 is sleeved on the outside of the movable rod. Specifically, under pressure, the air pressure in the air reservoir 5 squeezes the blocking block 10 downward, and the spring 11 deforms accordingly. The gas in the air reservoir 5 enters the interior of the compression cylinder 8 from the interior of the connecting pipe 9. After the air pressure in the air reservoir 5 is balanced, the spring 11 resets and drives the blocking block 10 to seal the connecting pipe 9, preventing gas backflow.

[0021] In this embodiment, both compression cylinders 8 are made of nitrile rubber. Specifically, by using nitrile rubber compression cylinders 8, they have good oil resistance and wear resistance.

[0022] In this embodiment, O-rings are provided at both the port of the upper connector 2 and the port of the lower connector. Specifically, the O-rings are used to increase the sealing performance at the ports of the upper connector 2 and the lower connector.

[0023] In this embodiment, a through groove is provided on the outer surface of the connecting plate 12. Specifically, gas passes through the through groove, passes through the connecting plate 12, and enters the interior of the compression cylinder 8 through the connecting pipe 9.

[0024] In this embodiment, the plug 10 is a frustum shape with a narrow top and a wide bottom. A sealing gasket is fixedly connected to the outer surface of the plug 10. Specifically, the frustum-shaped plug 10 with a narrow top and a wide bottom facilitates sealing the connecting pipe 9 from below, and the sealing gasket increases the sealing between the surface of the plug 10 and the connecting pipe 9.

[0025] In this embodiment, when the pressure inside the air reservoir 5 is balanced, the spring 11 is in a balanced state. Specifically, when the pressure inside the air reservoir 5 increases, it can apply force to the block 10, causing the spring 11 to stretch, so that the gas inside the air reservoir 5 enters the interior of the compression cylinder 8 through the connecting pipe 9. When the pressure inside the air reservoir 5 is balanced, the spring 11 returns to its original position, causing the connecting pipe 9 between the block 10 to be blocked.

[0026] Working Principle: In use, this utility model connects to the upper structure of the wellbore via the upper connector 2 and to the lower structure of the wellbore via the lower connector. During sealing, the hydraulic cylinder 4 operates, driving the piston disc 7 to move. This causes the piston disc 7 to move inside the connecting cylinder 6, applying pressure to the inside of the air storage bladder 5. Under this pressure, the air pressure inside the air storage bladder 5 compresses the blocking block 10 downwards, causing the spring 11 to deform. The gas inside the air storage bladder 5 enters the compression cylinder 8 from the inside of the connecting pipe 9. Utilizing the compressibility and elasticity of gas to store energy, the elasticity of the compression cylinder 8 is replenished, thereby maintaining the deformation of the compression cylinder 8 and the external pressure, achieving continuous sealing and ensuring reliable operation of the packer, preventing incomplete sealing or loss of seal.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air energy storage packer comprising a central tube (1), characterized in that: The top end of the central tube (1) is fixedly connected to an upper connector (2), the bottom end of the central tube (1) is fixedly connected to a lower connector, a valve is installed inside the central tube (1), a connecting end (3) is fixedly sleeved on the outer surface of the central tube (1) near the top end, a mounting plate is fixedly connected inside the connecting end (3), a hydraulic cylinder (4) is fixedly installed on the bottom outer surface of the mounting plate, a connecting cylinder (6) is fixedly connected to the inner surface of the connecting end (3), and an air storage bag is fixedly sleeved on the outer surface of the central tube (1). 5) The connecting cylinder (6) is connected to the interior of the air storage bag (5). The output end of the hydraulic cylinder (4) is fixedly connected to the piston disc (7). The piston disc (7) is movably connected to the interior of the connecting cylinder (6). The outer surface of the central tube (1) is fixedly fitted with two compression rubber cylinders (8) below the air storage bag (5). The two compression rubber cylinders (8) are connected to each other. The bottom outer surface of the air storage bag (5) is fixedly connected to the connecting pipe (9). The connecting pipe (9) is connected to one of the compression rubber cylinders (8).

2. An air-based energy storage packoff according to claim 1, wherein: A connecting plate (12) is fixedly connected to the inner surface of the connecting pipe (9). A movable rod is movably inserted into the outer surface of the connecting plate (12). A block (10) is fixedly connected to the bottom outer surface of the movable rod. A spring (11) is fixedly connected between the block (10) and the connecting plate (12). The spring (11) is sleeved on the outside of the movable rod.

3. The air-based energy storage packer of claim 1, wherein: Both of the compression cylinders (8) are made of nitrile rubber.

4. An air-storage packer according to claim 1, characterized in that: Both the upper connector (2) and the lower connector are provided with O-ring seals.

5. An air energy storage packer according to claim 2, characterized in that: The outer surface of the connecting plate (12) is provided with a through groove.

6. An air energy storage packer according to claim 2, characterized in that: The plug (10) is a frustum-shaped block that is thinner at the top and thicker at the bottom, and a sealing gasket is fixedly connected to the outer surface of the plug (10).

7. An air energy storage packer according to claim 2, characterized in that: When the pressure inside the air reservoir (5) is balanced, the spring (11) is in a balanced state.

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