A compressed air energy storage system

Abstract

The utility model belongs to air energy storage technical field, concretely relates to a compressed air energy storage system, including the support subassembly that is equipped with in the tank body bottom, the fixed installation of the shape air bag is in the tank body peripheral central portion, the peripheral ring of annular air bag is surrounded and is equipped with several strip grooves, the top of annular air bag is installed with the air inlet pipe, is equipped with check valve in the air inlet pipe inside, the end of air inlet pipe is installed with the connector, the bottom side of annular air bag is installed with the exhaust pipe, and the end of exhaust pipe is detachably installed with the closure piece, be provided with several, several reinforcing agencies are arranged in several strip grooves inside, when using, utilize annular air bag and the abutment of deep pit inner wall, realize the positioning effect, avoid the inclination of tank body after installation, improve the use safety.

Description

Technical Field

[0001] This utility model belongs to the field of air energy storage technology, specifically relating to a compressed air energy storage system. Background Technology

[0002] Compressed air energy storage systems are one of the key technologies in the field of energy storage and dispatch. Their core principle is to convert electrical energy into the potential energy of compressed air for storage. When needed, the compressed air is released to drive the equipment to do work, thereby realizing the recovery and utilization of energy. They are widely used in scenarios such as new energy consumption and grid peak shaving.

[0003] As a core component of compressed air energy storage systems, compressed air storage tanks are typically made of high-strength steel to withstand mechanical loads under high-pressure conditions. To further enhance the stability and safety of system operation and avoid the impact of ground environmental factors on the tank, current technologies generally bury the entire storage tank underground. The soil's encapsulation enhances the tank's impact resistance and reduces the safety risks that may arise from high-pressure leaks.

[0004] Due to their large size, the existing compressed air energy storage tanks require a three-step burial process: first, a deep pit is excavated using excavation equipment; second, the energy storage tank is lifted into the pit using lifting equipment; and finally, the pipeline is installed and the area is filled and leveled with concrete or sand to ensure the system's safety and stability.

[0005] However, this construction process has a significant flaw: after the energy storage tank is placed in the deep pit, there is a lack of a dedicated support and fixing structure between its outer wall and the pit wall. This can cause the energy storage tank to tilt during subsequent landfill operations due to soil compression or flow. If the tilt is not corrected, it will, on the one hand, cause uneven stress on the internal structure of the tank, exacerbate local stress concentration, and increase the risk of tank damage; on the other hand, it may damage the sealed connection between the tank and the pipeline, causing compressed air leakage, and in severe cases, even leading to tank explosion, posing a significant safety hazard. To address these issues, we propose a compressed air energy storage system. Utility Model Content

[0006] The purpose of this invention is to provide a compressed air energy storage system that utilizes an annular airbag to abut against the inner wall of a deep pit during use, achieving a positioning effect, preventing the tank from tilting after installation, and improving safety during use.

[0007] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0008] A compressed air energy storage system, including

[0009] The tank body has a support assembly at its bottom;

[0010] An annular airbag is fixedly installed in the center of the tank body. Several strip grooves are arranged around the annular airbag. An air inlet pipe is installed at the top of the annular airbag. A one-way valve is installed inside the air inlet pipe. A connector is installed at the end of the air inlet pipe. An exhaust pipe is installed on the bottom side of the annular airbag. A detachable closure is installed at the end of the exhaust pipe.

[0011] The reinforcement mechanism is provided in several parts, and each reinforcement mechanism is set inside several strip-shaped grooves.

[0012] As a preferred technical solution, the reinforcement mechanism includes a reinforcement block, one end of which is fixedly connected to the inner wall of the strip groove. A strip assembly block is fixedly installed on the end of the reinforcement block away from the tank body. Insert rods are fixedly installed on both the upper and lower parts of the strip assembly block on the side away from the tank body. Multi-stage telescopic components are fixedly installed on both the upper and lower parts of the strip assembly block on the side close to the tank body. The ends of the two multi-stage telescopic components away from the strip assembly block are fixedly connected to the periphery of the tank body.

[0013] As a preferred technical solution, both ends of the plug rods can be detachably fitted with sealing caps, and the two sealing caps are close to each other on one side and are fixedly installed with a pick-up rod.

[0014] As a preferred technical solution, the support assembly includes four support columns, which are assembled around the bottom of the tank.

[0015] The beneficial effects of this utility model are:

[0016] The tank's structure, consisting of four surrounding support columns at the bottom and an inflatable annular airbag that abuts against the inner wall of the pit, along with a reinforcement mechanism that inserts a connecting rod into the soil, forms a multi-layered stable structure. This effectively solves the problem of the lack of dedicated support between the energy storage tank and the pit wall, preventing the tank from tilting due to soil compression or flow during landfill operations. This also prevents damage caused by uneven stress distribution and localized stress concentration within the tank's internal structure, while preventing the tank from tilting and damaging the sealing connection with the pipeline, thus preventing compressed air leakage and potential explosion hazards. Attached Figure Description

[0017] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial structural schematic diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model from another perspective;

[0021] Reference numerals: Tank 1, Support assembly 11, Annular airbag 2, Strip groove 21, Air inlet pipe 22, Connector 24, Exhaust pipe 25, Sealing component 26, Reinforcing mechanism 3, Reinforcing block 31, Strip assembly block 32, Insert rod 33, Multi-stage telescopic component 34, Sealing cap 35, Retrieval rod 36. Detailed Implementation

[0022] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1-3 As shown, this utility model discloses a compressed air energy storage system, including...

[0024] Tank 1, with a support assembly 11 at the bottom; specifically, the support assembly 11 includes four support columns, which are arranged around the bottom of the tank 1; the four surrounding support columns can provide stable support for the tank 1.

[0025] An annular airbag 2, or a shape-changing airbag 2, is fixedly installed in the center of the periphery of the tank body 1. The annular airbag 2 is made of fluororubber FKM composite airbag or nitrile rubber NBR composite airbag. Several strip grooves 21 are arranged around the periphery of the annular airbag 2. An air inlet pipe 22 is installed on the top of the annular airbag 2. A one-way valve is installed inside the air inlet pipe 22. A connector 24 is installed at the end of the air inlet pipe 22. An exhaust pipe 25 is installed on the bottom side of the annular airbag 2. A detachable sealing part 26 is installed at the end of the exhaust pipe 25.

[0026] The reinforcement mechanism 3 is provided in several parts, and the reinforcement mechanism 3 is respectively provided inside several strip grooves 21.

[0027] When using it, first ensure that the four support columns in the support assembly 11 at the bottom of the tank 1 are properly assembled. After the tank 1 is placed in the deep pit, the four support columns can provide stable support for the tank 1, preventing it from tilting due to soil compression or flow during subsequent landfill operations. At the same time, confirm that the annular airbag 2 is fixedly installed in the center of the tank 1, the reinforcement mechanism 3 in the strip groove 21 is properly assembled, the sealing part 26 at the end of the exhaust pipe 25 is tightly sealed, and the one-way valve 23 in the air inlet pipe 22 is functioning normally.

[0028] Next, the external compressed air source is connected through the connector 24 at the end of the air intake pipe 22. The compressed air enters the annular airbag 2 through the one-way valve 23. After the annular airbag 2 is inflated, it expands. The inflation stops when the annular airbag 2 comes into contact with the inner wall of the pit. When it is necessary to release energy, the sealing part 26 of the exhaust pipe 25 is removed to perform the exhaust operation. After the energy release is completed, the sealing part 26 is reinstalled and the next inflation cycle is waited for.

[0029] The inflated annular airbag 2 effectively fills the gap between the energy storage tank and the deep pit wall where there is no special support, preventing the tank 1 from tilting due to the soil during the landfill operation. It fundamentally solves the problem of uneven internal structural stress and local stress concentration caused by the tilting of the tank 1, and reduces the risk of damage to the tank 1.

[0030] The support component 11 and the reinforcement mechanism 3 work together to ensure the stability of the tank 1, prevent the tank 1 from tilting and damaging the sealing connection with the pipeline, and play a further reinforcement role.

[0031] The reinforcement mechanism 3 includes a reinforcement block 31. One end of the reinforcement block 31 is fixedly connected to the inner wall of the strip groove 21. A strip assembly block 32 is fixedly installed on the end of the reinforcement block 31 away from the tank body 1. Insert rods 33 are fixedly installed on both the upper and lower parts of the side of the strip assembly block 32 away from the tank body 1. Multi-stage telescopic components 34 are fixedly installed on both the upper and lower parts of the side of the strip assembly block 32 close to the tank body 1. The ends of the two multi-stage telescopic components 34 away from the strip assembly block 32 are fixedly connected to the periphery of the tank body 1.

[0032] After the tank 1 is installed, in the initial state, since the annular airbag 2 is not inflated, taking one of the reinforcement mechanisms 3 as an example, the two multi-stage telescopic components 34 are in a retracted state. After the annular airbag 2 is inflated, it expands. As the annular airbag 2 expands, it will push the reinforcement block 31 to move. Due to the limitation of the strip assembly block 32 by the two multi-stage telescopic components 34, the strip assembly block 32 will push the reinforcement block 31 to move stably. As the annular airbag 2 is gradually inflated, it will use the strip assembly block 32 to push the two plug rods 33 to gradually insert into the soil of the deep pit for reinforcement until the annular airbag 2 stops inflating. Finally, several plug rods 33 are inserted into the soil of the deep pit around the annular airbag 2, which can play a further fixing role and prevent it from tilting. It is simple and convenient to use. When the annular airbag 2 is discontinued, the staff can manually pull out the plug rods 33.

[0033] Both ends of the two plug rods 33 are detachably fitted with sealing caps 35. The two sealing caps 35 are close to each other and are fixedly installed with a take-up lever 36. When not in use, the annular airbag 2 is in an uninflated state. The sealing caps 35 can be used to seal the tip of the plug rod 33 to avoid accidental punctures and increase safety. It can be removed by pulling it out with the take-up lever 36.

[0034] The device is used as follows:

[0035] During use, first ensure that the four support columns in the support assembly 11 at the bottom of the tank 1 are properly assembled. After placing the tank 1 into the deep pit, the four support columns provide stable support for the tank 1. At the same time, confirm that the annular airbag 2 is fixedly installed in the center of the tank 1, the reinforcing mechanism 3 in the strip groove 21 is properly assembled, the sealing part 26 at the end of the exhaust pipe 25 is tightly sealed, the one-way valve 23 in the air inlet pipe 22 is functioning normally, and the annular airbag 2 is in an uninflated state. At this time, the two multi-stage telescopic parts 34 of the reinforcing mechanism 3 are in the retracted state, and the sealing cap 35 at the end of the plug rod 33 is in the installed state. Then, remove the sealing cap 35 and connect it to an external compressed air source through the connector 24 at the end of the air inlet pipe 22 to compress the air. Air enters the annular airbag 2 through the one-way valve 23. After the annular airbag 2 is inflated, it expands and pushes the reinforcing block 31 to move. Due to the limiting of the strip assembly block 32 by the two multi-stage telescopic components 34, the strip assembly block 32 pushes the reinforcing block 31 to move stably, and then pushes the two plug-in rods 33 to gradually insert into the soil of the deep pit. After the annular airbag 2 comes into contact with the inner wall of the deep pit, inflation stops. At this time, several plug-in rods 33 are inserted into the soil of the deep pit. When energy release is required, the sealing part 26 of the exhaust pipe 25 is removed to perform the venting operation. After the annular airbag 2 is deflated, the staff manually pulls out the plug-in rods 33. After the energy release is completed, the sealing part 26 and the sealing cap 35 are reinstalled, and the next inflation cycle is awaited.

[0036] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A compressed air energy storage system, characterized in that: include Tank body (1), with a support component (11) at the bottom of the tank body (1); An annular airbag (2) is fixedly installed in the center of the tank body (1). Several strip grooves (21) are arranged around the annular airbag (2). An air inlet pipe (22) is installed on the top of the annular airbag (2). A one-way valve is provided inside the air inlet pipe (22). A connector (24) is installed at the end of the air inlet pipe (22). An exhaust pipe (25) is installed on the bottom side of the annular airbag (2). A detachable sealing part (26) is installed at the end of the exhaust pipe (25). The reinforcement mechanism (3) is provided in several parts, and the reinforcement mechanism (3) is respectively provided in several strip grooves (21).

2. The compressed air energy storage system according to claim 1, characterized in that: The reinforcement mechanism (3) includes a reinforcement block (31). One end of the reinforcement block (31) is fixedly connected to the inner wall of the strip groove (21). A strip assembly block (32) is fixedly installed on the end of the reinforcement block (31) away from the tank body (1). A plug rod (33) is fixedly installed on both the upper and lower parts of the strip assembly block (32) away from the tank body (1). A multi-level telescopic component (34) is fixedly installed on both the upper and lower parts of the strip assembly block (32) close to the tank body (1). The ends of the two multi-level telescopic components (34) away from the strip assembly block (32) are fixedly connected to the periphery of the tank body (1).

3. The compressed air energy storage system according to claim 2, characterized in that: Both plug rods (33) have detachable caps (35) at their ends, and the two caps (35) are fixedly mounted on one side of each other with a pick-up rod (36).

4. The compressed air energy storage system according to claim 1, characterized in that: The support assembly (11) includes four support columns, which are mounted around the bottom of the tank body (1).

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