High pressure air storage tank, method of using same and compressed air energy storage plant

Abstract

The present application relates to the technical field of building construction, for reducing the degree of blasting. Specifically relates to a kind of high-pressure air storage tank and its use method and compressed air energy storage equipment, high-pressure air storage tank includes: outer tank body, the outer tank body is used to accommodate high-pressure gas;Capsule container, the capsule container is multiple, and is arranged in the outer tank body interior;The throttle is arranged on the capsule container, and the throttle is used to limit the release speed of high-pressure gas in the capsule container. Through the above high-pressure air storage tank for reducing the degree of blasting, not only can effectively reduce the harm caused by high-pressure air storage tank blasting. Moreover, can effectively solve the problem of high production and maintenance cost of the multi-layer arrangement structure gas storage device in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressed energy storage, in particular to a high-pressure air storage tank, a use method thereof and a compressed air energy storage device. BACKGROUND

[0002] As a large-scale physical energy storage technology, the core energy storage unit of the advanced compressed air energy storage technology adopts a high-pressure air storage tank, which breaks away from the constraints of traditional compressed air energy storage systems on geographical conditions and has a broad market application prospect. However, due to the large capacity of the air storage device matched with the advanced compressed air energy storage power station, the large compressed air storage tank will cause great damage once it explodes accidentally. Therefore, to improve the safety and reliability of the equipment and reduce the risk of explosion is an urgent technical problem for those skilled in the art.

[0003] In the prior art, in order to reduce the potential explosion risk of the air storage device matched with the advanced compressed air energy storage system, the conventional design mainly reduces the damage caused by the explosion by increasing the wall thickness of the device. However, from the economic point of view, due to the consideration of the explosion hazard of the storage tank, the thickness of the storage tank in the actual project is much larger than the value that meets the basic strength requirement, which increases the volume and cost of the storage tank. The way of improving the safety of the storage tank by increasing the wall thickness of the device not only greatly increases the investment cost, but also increases the construction difficulty and greatly increases the quality safety risk of the high-pressure air storage tank. Therefore, those skilled in the art urgently need to think of a high-pressure air storage tank that can reduce the explosion degree without increasing the wall thickness of the device. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the problem of high production and maintenance cost of the multi-layer arrangement structure of the air storage device in the prior art. To this end, the present application provides a high-pressure air storage tank, comprising:

[0005] an outer tank body for containing high-pressure gas;

[0006] a plurality of capsule containers arranged inside the outer tank body; the capsule containers are provided with a throttle opening for limiting the release speed of high-pressure gas in the capsule containers.

[0007] Optionally, the high-pressure air storage tank further comprises:

[0008] a limiting net lining arranged in the outer tank body for wrapping the capsule containers and limiting the capsule containers.

[0009] Optionally, the air inlet and air outlet of the capsule container are realized through the throttle opening.

[0010] Optionally, the limiting net lining is a mesh structure made of metal material.

[0011] Optionally, the capsule container is a jar structure, and the throttle is a throat provided at an end position of the capsule container and having a diameter smaller than other positions of the capsule container.

[0012] Optionally, the capsule container is made of high-density polyethylene material or other composite materials; the outer tank body

[0013] is made of steel material.

[0014] Optionally, the outer tank body is provided with a vent for compressed air to enter or exit the inside of the outer tank body.

[0015] The use method of the high-pressure air storage tank includes the following steps: 5 during the energy storage process, compressed air is injected into the outer tank body, and the compressed air enters the capsule container through the throttle

[0016] to maintain the pressure balance inside and outside the capsule container;

[0017] during the energy release process, the compressed air in the outer tank body is discharged to reduce the pressure in the outer tank body, and the compressed air in the capsule container is slowly discharged through the throttle to maintain the pressure balance inside and outside the capsule container;

[0018]

[0019] 0 when the outer tank body explodes, the pressure in the outer tank body decreases, and a plurality of capsule containers collide with each other under the action of the explosion driving force generated by the outer tank body and the exhaust driving force of the throttle of the capsule container to reduce the explosion hazard.

[0020]

[0021] A compressed air energy storage device comprises a high-pressure air storage tank.

[0022] The technical scheme of the present application has the following advantages:

[0023] 1. The high-pressure air storage tank provided by the present application comprises an outer tank body for containing high-pressure gas, a plurality of capsule containers arranged inside the outer tank body, and a throttle provided on the capsule container for limiting the release speed of high-pressure gas in the capsule container.

[0024] ​​In the present application, a plurality of capsule containers with throttling openings are arranged in the outer tank. Once the outer tank is suddenly ruptured, the initial destructive force mainly comes from a small amount of compressed air outside the capsule containers, because a large amount of high-pressure gas is stored in the plurality of capsule containers in the outer tank. The flow of the small amount of compressed air is also hindered by the large amount of capsule containers, thereby slowing down the rupture force. Moreover, the amount of air of the small amount of compressed air is limited, and the destructive force is greatly reduced. In addition, because a large amount of high-pressure air in the high-pressure air storage tank is still in the capsule containers, when the pressure outside the capsule containers rapidly decreases, the pressure difference between the inside and outside of the capsule containers causes the capsule containers to expand and release energy, and the high-pressure air is slowly released through the throttling openings to avoid the rupture of the capsule containers. According to experiments, in the present application, the high-pressure air storage tank for reducing the degree of rupture only a small amount of high-pressure air outside the capsule containers will produce destructive force at the first time after the outer tank is ruptured, and the other large amount of compressed air will be delayed to release energy, thereby greatly reducing the degree of destruction of the rupture.

[0025] In addition, in terms of structure, the high-pressure air storage tank for reducing the degree of rupture provided by the present application has a simple structure and is easy to manufacture. Moreover, in terms of material selection, the high-pressure air storage tank only needs to meet the requirement of structural strength. For example, the capsule containers in the present application can be made of new plastic materials such as high-density polyethylene, which can greatly reduce the demand for steel materials for the gas storage device and reduce the weight of the gas storage device.

[0026] The cost is reduced.

[0027] 2. The high-pressure air storage tank provided by the present application further comprises a limiting net lining arranged in the outer tank for wrapping and limiting the capsule containers.

[0028] The limiting net lining can limit the capsule containers when the outer tank is ruptured, and block the gas from the throttling openings of the capsule containers. Moreover, because the inlet and outlet directions of the capsule containers are different, the forces between the pressure gases sprayed by the adjacent capsule containers can also be cancelled out, thereby further reducing the degree of rupture.

[0029] 3. The high-pressure air storage tank provided by the present application, wherein the limiting net lining is a mesh structure made of metal. The limiting net lining made of metal can firmly and reliably position and fix the capsule containers, and when the outer tank is ruptured, the mesh structure can release high-pressure air without damaging its structural strength, and still effectively block the capsule containers from flying out.

[0030] 4. The high-pressure air storage tank provided by the present application, wherein the capsule container is made of high-density polyethylene material; and the outer tank body is made of steel material. The capsule container made of high-density polyethylene material can effectively reduce the cost of the high-pressure air storage tank. Moreover, the structure of the high-pressure air storage tank can effectively reduce the wall thickness of the outer tank body, greatly reducing the investment cost and installation difficulty of the high-pressure air storage tank.

[0031] 5. The high-pressure air storage tank and the use method thereof provided by the present application, wherein the use method comprises the following steps:

[0032] In the energy storage process, the compressed air is injected into the outer tank body, and the compressed air enters the capsule container through the throttling opening to keep the pressure balance between the inside and outside of the capsule container.

[0033] In the energy release process, the compressed air in the outer tank body is discharged to reduce the pressure in the outer tank body, and the compressed air in the capsule container is slowly discharged through the throttling opening to keep the pressure balance between the inside and outside of the capsule container.

[0034] When the outer tank body explodes, the pressure in the outer tank body is reduced, and the plurality of capsule containers collide with each other under the action of the explosion driving force generated by the outer tank body and the exhaust driving force of the throttling opening of the capsule container to reduce the explosion hazard.

[0035] In the present application, only a small amount of compressed air in the outer tank body outside the capsule container can cause damage. The capsule container can effectively store compressed air to reduce the explosion force. Moreover, the capsule container can also block the flow of compressed air to further reduce the explosion hazard.

[0036]

[0037] 6. The compressed air energy storage device provided by the present application, comprising a high-pressure air storage tank. Therefore, the compressed air energy storage device has all the advantages of the high-pressure air storage tank. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0039] Figure 1 The internal structure diagram of the high-pressure air storage tank for reducing the degree of explosion provided by the present application;

[0040] Figure 2 ​A schematic structural view of the capsule container provided by the present application.

[0041] Explanation of reference signs:

[0042] 1 - outer tank body; 2 - capsule container; 3 - throttle; 4 - limiting net lining; 5 - air vent; 6 - supporting base. DETAILED DESCRIPTION

[0043] The technical solutions of the present application will be described below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] Embodiment 1

[0046] In this embodiment, a high-pressure air storage tank is provided, as shown in Figure 1 which comprises:

[0047] An outer tank body 1 for containing high-pressure gas; the outer tank body 1 is provided with an air vent 5 for compressed air to enter or exit the inside of the outer tank body 1. In this embodiment, the air inlet and air outlet of the capsule container 2 are both realized through the throttle 3, as shown in Figure 1

[0048] A plurality of capsule containers 2 are arranged inside the outer tank body 1; as shown in Figure 2 The capsule container 2 is provided with a throttle 3, which is used to limit the release speed of high-pressure gas in the capsule container 2;

[0049] A limiting net lining 4, as shown in Figure 1 The limiting net lining 4 is arranged in the outer tank body 1 and is used to wrap and limit the capsule container 2. The limiting net lining 4 is a mesh structure made of metal;

[0050] ​A support base 6 is arranged at the bottom of the outer tank 1 to support the outer tank 1.

[0051] In the embodiment, the capsule container 2 is a tank structure, and the throttle 3 is a throat arranged at the end of the capsule container 2 and having a smaller diameter than other positions of the capsule container 2. The capsule container 2 is made of high-density polyethylene, and the outer tank 1 is made of steel. Figure 2

[0052] The use method of the high-pressure air storage tank includes the following steps.

[0053] In the energy storage process, compressed air is injected into the outer tank 1, and the compressed air enters the capsule container 2 through the throttle 3 to maintain the pressure balance between the inside and outside of the capsule container 2.

[0054] In the energy release process, the compressed air in the outer tank 1 is discharged to reduce the pressure in the outer tank 1, and the compressed air in the capsule container 2 is slowly discharged through the throttle 3 to maintain the pressure balance between the inside and outside of the capsule container 2.

[0055] When the outer tank 1 explodes, the pressure in the outer tank 1 decreases, and the capsule containers 2 collide with each other under the action of the explosion driving force generated by the outer tank 1 and the exhaust driving force of the throttle 3 of the capsule container 2 to reduce the explosion hazard.

[0056] Of course, whether the air inlet and air outlet of the capsule container 2 are realized through the throttle 3 is not limited in the embodiment, and in other embodiments, the air inlet and air outlet of the capsule container 2 can be two respectively for the compressed gas inlet and compressed gas outlet.

[0057] Of course, whether the high-pressure air storage tank is provided with the limiting net liner 4 and the material of the limiting net liner 4 are not limited in the embodiment, and in other embodiments, the outer tank 1 of the high-pressure air storage tank is not provided with the limiting net liner 4.

[0058] Of course, the specific structure of the throttle 3 is not limited in the embodiment, and in other embodiments, the throttle 3 can also realize the throttling function of the capsule container 2 through a throttle valve.

[0059] Of course, the material of the capsule container 2 is not limited in the embodiment, and in other embodiments, the capsule container 2 can also be made of steel.

[0060] Embodiment 2

[0061] A compressed air energy storage device includes a high-pressure air storage tank.

[0062] The high-pressure air storage tank includes: ​

[0063] An outer tank 1 for containing high-pressure gas; the outer tank 1 is provided with a vent 5 for compressed air to enter or discharge from the inside of the outer tank 1. In this embodiment, as shown in the figure, the air inlet and air outlet of the capsule container 2 are both realized through the throttle opening 3; Figure 1

[0064] A plurality of capsule containers 2 are arranged inside the outer tank 1; as shown in the figure, the capsule container 2 is provided with a throttle opening 3 for limiting the release speed of the high-pressure gas in the capsule container 2;

[0065]

[0066] A limiting net lining 4, as shown in the figure, is arranged in the outer tank 1 for wrapping and limiting the capsule container 2. The limiting net lining 4 is a metal mesh structure. Figure 1

[0067] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and also impossible to enumerate all the embodiments. The changes or variations derived therefrom are still within the protection scope of the present application.​​​

Claims

1. A high pressure air storage tank characterized by, It comprises: an outer tank (1) for storing high-pressure gas; a plurality of capsule containers (2) arranged inside the outer tank (1); the capsule containers (2) are provided with throttle openings (3) for limiting the release speed of high-pressure gas in the capsule containers (2); a limiting net lining (4) arranged in the outer tank (1) for wrapping and limiting the capsule containers (2).

2. The high-pressure air tank according to claim 1, characterized in that The gas inlet and outlet of the capsule containers (2) are realized through the throttle openings (3).

3. The high-pressure air storage tank according to claim 1, characterized by The limiting net lining (4) is a mesh structure made of metal.

4. The high-pressure air storage tank according to claim 1, characterized by The capsule containers (2) are in a tank structure, and the throttle openings (3) are throats arranged at the end of the capsule containers (2) and have a smaller diameter than other positions of the capsule containers (2).

5. The high pressure air storage tank of claim 1, wherein, The capsule containers (2) are made of high-density polyethylene, and the outer tank (1) is made of steel.

6. The high pressure air storage tank of claim 1, wherein, The outer tank (1) is provided with a vent (5) for compressed air to enter or exit the inside of the outer tank (1).

7. The high pressure air storage tank of claim 1, wherein, It further comprises: a support base (6) arranged at the bottom of the outer tank (1) for supporting the outer tank (1).

8. A method of using the high pressure air storage tank of claim 1, wherein, It comprises the following steps: During the energy storage process, compressed air is injected into the outer tank (1), and the compressed air enters the capsule containers (2) through the throttle openings (3) to maintain the pressure balance inside and outside the capsule containers (2); During the energy release process, the compressed air in the outer tank (1) is discharged to reduce the pressure in the outer tank (1), and the compressed air in the capsule containers (2) is slowly discharged through the throttle openings (3) to maintain the pressure balance inside and outside the capsule containers (2); When the outer tank (1) explodes, the pressure in the outer tank (1) decreases, and a plurality of capsule containers (2) collide with each other under the action of the explosion driving force generated by the outer tank (1) and the exhaust driving force of the throttle openings (3) of the capsule containers (2) to reduce the explosion hazard.

9. A compressed air energy storage apparatus, characterized by, It comprises: The high-pressure air storage tank of any one of claims 1 to 7.

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