CN218894746U - Gravity compressed air energy storage system gas storage - Google Patents
Gravity compressed air energy storage system gas storage Download PDFInfo
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- CN218894746U CN218894746U CN202222890551.2U CN202222890551U CN218894746U CN 218894746 U CN218894746 U CN 218894746U CN 202222890551 U CN202222890551 U CN 202222890551U CN 218894746 U CN218894746 U CN 218894746U
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- compressed air
- gravity compressed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
The application provides a gravity compressed air energy storage system gas storage, the gas storage that encloses presents narrow lower wide on the whole, when pressure-bearing cylinder down moves to the wall of bottom time sealing membrane hugs closely the gas storage shaft, its sealing membrane stress condition is the same with the vertical gas storage shaft of same width in the prior art about the sealing membrane stress condition does not change, but when pressure-bearing cylinder moves to the upper portion, sealing membrane motion hugs closely the wall of permanent straight section for this embodiment provides sufficient sealing membrane maintenance space on the basis that reduces the clearance between shaft inner wall and the pressure-bearing cylinder and then reduces sealing membrane atress, and does not have local stress concentration point, the effectual structure that improves the gas storage chamber in the traditional gravity compressed air energy storage system.
Description
Technical Field
The application relates to the technical field of energy storage, in particular to a gravity compressed air energy storage system gas storage.
Background
The compressed air energy storage system stores redundant electric energy through compressed air, and releases high-pressure air to do work through the expander to generate electricity when needed. When storing energy, the compressed air energy storage system consumes electric energy to compress and store air in the air storage chamber; when releasing energy, the high-pressure air is released from the air storage chamber, enters the combustion chamber, is heated by fuel combustion, is heated, and then drives power generation, and can be used for heating air by recycling compression heat without fuel combustion. The compressed air energy storage system can build a large-scale power station with the power of more than 100MW, is inferior to a pumped storage power station, and has the advantages of long energy storage period, small unit energy storage investment, long service life and high efficiency.
In the process, high-pressure gas is input into the gas storage, and the gravity pressing block above the sealing film is lifted through the sealing film to have gravitational potential energy, and the sealing film is subjected to huge tensile force in the process, so that the sealing film material needs to be specially prepared, and the sealing film needs to be protected as much as possible. In the prior art, the vertical shaft is equal in width and constant in clearance between the vertical shaft and the gravity pressing block, a gas storage is formed by enclosing a sealing film, the space below the sealing film and the gravity pressing block between the vertical shaft and the gravity pressing block, the sealing film is respectively anchored on the vertical shaft and the gravity pressing block, the clearance between the inner wall of the vertical shaft and the gravity pressing block can be reduced to reduce the stress of the sealing film, but insufficient space for overhauling the sealing film can be caused, and if an overhauling platform is independently built at the anchoring position of the sealing film, local concentrated stress is generated at the position of the expanding digging side of the overhauling platform, so that the maintenance of the sealing film is not facilitated.
Disclosure of Invention
The present application aims to solve, at least to some extent, one of the technical problems in the related art.
Therefore, the purpose of this application is to propose a gravity compressed air energy storage system gas storage, and the gas storage that encloses presents narrow lower wide on the whole, when pressure-bearing cylinder down moves to the wall of bottom time sealing membrane hugs closely the gas storage shaft, its sealing membrane stress condition is the same with the sealing membrane stress condition in the vertical gas storage shaft of vertical same width from top to bottom in the prior art does not change, but when pressure-bearing cylinder moves to the upper portion, sealing membrane motion hugs closely the wall of permanent straight section for this embodiment provides sufficient sealing membrane maintenance space on the basis that reduces the clearance between shaft inner wall and the pressure-bearing cylinder and then reduces sealing membrane atress, and there is not local stress concentration point, the effectual traditional gravity compressed air energy storage chamber structure of having improved.
To achieve the above object, the present application provides a gravity compressed air energy storage system gas storage, comprising:
the gas storage vertical shaft is movably inserted with a pressure-bearing cylinder, and a gap is reserved between the gas storage vertical shaft and the pressure-bearing cylinder; the gas storage vertical shaft comprises a constant straight section, a side expansion section and a wide straight section which are sequentially connected from top to bottom, and the outer walls of the constant straight section, the side expansion section and the wide straight section are on the same horizontal plane;
a sealing film disposed in the gap; the sealing film is in sealing connection with the outer wall of the pressure-bearing cylinder and the inner wall of the bottom of the constant straight section, so that a gas storage reservoir is formed by enclosing the sealing film, a space, below the sealing film, of the gas storage shaft and the pressure-bearing cylinder.
In some embodiments, the pressure cylinder is filled with a gravity briquette.
In some embodiments, the constant straight sections have the same cross-sectional area in the vertical direction and have an inner diameter greater than the outer diameter of the pressure-bearing cylinder.
In some embodiments, the cross-sectional area of the side expansion section in the vertical direction decreases sequentially from top to bottom, and the cross-sectional area of the upper end of the side expansion section is the same as the cross-sectional area of the constant straight section.
In some embodiments, the wide straight sections are all the same in cross-sectional area in the vertical direction and the same as the cross-sectional area of the bottom ends of the side-expanded sections.
In some embodiments, an access door is also included; the access door is arranged at the bottom of the gas storage vertical shaft and used for overhauling the sealing film.
In some embodiments, the guide device is arranged at the circumference side of the pressure-bearing cylinder and positioned between the constant straight section and the pressure-bearing cylinder.
In some embodiments, the guide means comprises a guide slot and a roller; wherein the guide groove is provided with a plurality of guide grooves which are respectively arranged on the inner wall of the constant straight section; the roller is matched with the guide groove and is connected with the bottom of the guide groove, so that the roller moves up and down along the bottom of the guide groove when the pressure-bearing cylinder moves up and down.
In some embodiments, a steel liner is provided on the inner wall of the gas storage shaft.
Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic view of a gas storage according to an embodiment of the present disclosure;
in the figure, 1, a gas storage vertical shaft; 2. a pressure-bearing cylinder; 3. an access door; 4. a sealing film; 5. a gas storage; 6. a constant straight section; 7. a side expansion section; 8. a wide straight section.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the present application include all alternatives, modifications, and equivalents as may be included within the spirit and scope of the appended claims.
Referring to fig. 1, a gravity compressed air energy storage system air storage according to an embodiment of the present application includes an air storage shaft 1 and a sealing membrane 4; the gas storage vertical shaft 1 is movably inserted with a pressure-bearing cylinder 2, and a gap is reserved between the gas storage vertical shaft 1 and the pressure-bearing cylinder 2; the gas storage vertical shaft 1 comprises a constant straight section 6, a side expansion section 7 and a wide straight section 8 which are sequentially connected from top to bottom, wherein the outer walls of the constant straight section, the side expansion section 7 and the wide straight section 8 are on the same horizontal plane; the sealing film 4 is disposed in the gap; the sealing film 4 is in sealing connection with the outer wall of the pressure-bearing cylinder 2 and the inner wall of the bottom of the constant straight section 6, so that the sealing film 4, the space of the gas storage vertical shaft 1 below the sealing film 4 and the pressure-bearing cylinder 2 enclose a gas storage 5.
Specifically, the gas storage vertical shaft 1 is formed by digging downwards in a soil layer, the upper part of the gas storage vertical shaft 1 is opened, the pressure-bearing cylinder 2 is movably inserted in the upper end of the gas storage vertical shaft, a gap is formed between the outer wall of the pressure-bearing cylinder 2 and the inner wall of the gas storage vertical shaft 1, a sealing film 4 is arranged in the gap, the sealing film 4 is in sealing connection with the outer wall of the pressure-bearing cylinder 2 and the inner wall of the gas storage vertical shaft 1, and a gas storage 5 is formed by enclosing the sealing film 4, the space of the gas storage vertical shaft 1 below the sealing film 4 and the pressure-bearing cylinder 2. In this embodiment, the gas storage vertical shaft 1 is sequentially connected with the constant straight section 6, the side expansion section 7 and the wide straight section 8 from top to bottom, wherein the bottom of the constant straight section 6 is connected with the top of the side expansion section 7, the bottom of the side expansion section 7 is connected with the top of the wide straight section 8, the bottom of the wide straight section 8 is the bottom of the gas storage vertical shaft 1, and the three sections are connected with each other.
In some embodiments, the cross-sectional areas of the constant straight sections 6 in the vertical direction are the same, and the inner diameter of the constant straight sections is larger than the outer diameter of the pressure-bearing cylinder 2; the cross section area of the side expansion section 7 in the vertical direction is sequentially reduced from top to bottom, and the cross section area of the upper end of the side expansion section is the same as that of the constant straight section 6; the cross-sectional areas of the wide straight sections 8 in the vertical direction are the same as the cross-sectional areas of the bottom ends of the side-expanded sections 7.
Specifically, as shown in fig. 1, the constant straight section 6 and the wide straight section 8 are structural sections with the same cross-sectional area in the vertical direction, the side expansion sections 7 are connected between the constant straight section 6 and the wide straight section, the air storage chamber enclosed in the corresponding embodiment is of a structure with the upper part being wide and the lower part being wide, when the pressure-bearing cylinder 2 runs downwards to the bottom, the sealing film 4 is tightly attached to the wall surface of the air storage vertical shaft 1, the stress condition of the sealing film 4 is the same as that of the sealing film 4 in the vertical air storage vertical shaft 1 with the same width in the prior art, but when the pressure-bearing cylinder 2 runs to the upper part, the sealing film 4 moves tightly to the wall surface of the constant straight section 6, so that the embodiment provides sufficient maintenance space of the sealing film 4 on the basis of reducing the gap between the inner wall of the vertical shaft and the pressure-bearing cylinder 2 and further reducing the stress of the sealing film 4, no local stress concentration point exists, and the structure of the traditional gravity compressed air storage chamber is effectively improved.
In the energy storage process of the gravity compressed air energy storage system, electric energy drives an air compressor unit to work, compressed air is introduced into the air storage 5 by the air compressor unit, and the pressure of the compressed air pushes the pressure-bearing cylinder 2 and a gravity pressing block above the pressure-bearing cylinder 2 to move upwards; in the energy release process of the gravity compressed air energy storage system, compressed air in the air storage 5 is introduced into the air expansion unit to drive the air expansion unit to work so as to realize power generation.
In some embodiments, the gas reservoir 5 further comprises an access door 3; wherein access door 3 sets up in gas storage shaft 1 bottom for sealed access door 3 for overhaul sealed membrane 4.
In some embodiments, the gas reservoir 5 further comprises guiding means arranged circumferentially of the pressure cylinder 2 between the constant straight section 6 and the pressure cylinder 2.
Specifically, the guiding device comprises a guiding groove and a roller; wherein the guide groove is provided with a plurality of guide grooves which are respectively arranged on the inner wall of the constant straight section 6; the roller is matched with the guide groove and is connected with the bottom of the guide groove, so that the roller moves up and down along the bottom of the guide groove when the pressure-bearing cylinder 2 moves up and down. The plurality of guide grooves are arranged on the circumference of the pressure-bearing cylinder 2, and the guide grooves are arranged on the inner wall of the constant straight section 6; the plurality of rollers are arranged and are respectively arranged on the periphery of the gravity assembly through rotating shafts, and the rollers are connected with the bottom of the guide groove so that the rollers move up and down along the bottom of the guide groove when the gravity assembly moves up and down.
It can be understood that when the pressure-bearing cylinder 2 moves up and down in the energy storage process, a plurality of guide grooves can be formed on the circumference of the inner wall of the constant section 6 of the gas storage vertical shaft 1, for example, four guide grooves can be formed, 4 guide grooves can be formed on the inner wall of the constant section 6 at equal angles, as the roller on the pressure-bearing cylinder 2 is mounted on the upper circumference of the pressure-bearing cylinder 2 through the rotating shaft, the roller can rotate on the pressure-bearing cylinder 2, when the roller is connected with the bottom of the guide groove, the roller can not only limit through the guide groove, but also limit the movement direction of the pressure-bearing cylinder 2 through the guide groove and the roller, meanwhile, the pressure-bearing cylinder 2 moves vertically upwards or downwards along the direction of the guide groove at a certain speed, and lubricant such as butter and graphite is periodically added to the contact position of the guide groove and the roller, so that friction is reduced and the conversion rate of gravitational potential energy is improved.
In some embodiments, a steel liner is provided on the inner wall of the gas storage shaft 1.
Specifically, be provided with the steel lining on the inner wall of gas storage shaft 1, sealing membrane 4 is connected on the inner wall of steel lining, can improve the sealing performance of being connected between sealing membrane 4 through setting up the steel lining.
In some embodiments, the pressure cylinder 2 is filled with gravity compacts.
It can be understood that the pressure-bearing cylinder 2 can be a cylindrical structure surrounded by steel plates, the inside of the pressure-bearing cylinder is of a hollow structure, the weight is reduced, the lifting is convenient, and in addition, the gravity of energy storage can be increased by filling the gravity pressing block in the pressure-bearing cylinder 2.
It should be noted that in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present application.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (9)
1. A gravity compressed air energy storage system air storage, comprising:
the gas storage vertical shaft is movably inserted with a pressure-bearing cylinder, and a gap is reserved between the gas storage vertical shaft and the pressure-bearing cylinder; the gas storage vertical shaft comprises a constant straight section, a side expansion section and a wide straight section which are sequentially connected from top to bottom, and the outer walls of the constant straight section, the side expansion section and the wide straight section are on the same horizontal plane;
a sealing film disposed in the gap; the sealing film is in sealing connection with the outer wall of the pressure-bearing cylinder and the inner wall of the bottom of the constant straight section, so that a gas storage reservoir is formed by enclosing the sealing film, a space, below the sealing film, of the gas storage shaft and the pressure-bearing cylinder.
2. A gravity compressed air energy storage system gas storage according to claim 1, wherein the pressure cylinder is filled with gravity briquettes.
3. A gravity compressed air energy storage system gas storage according to claim 1 wherein the constant straight sections have the same cross-sectional area in the vertical direction and have an inner diameter greater than the outer diameter of the pressure-containing cylinder.
4. A gravity compressed air energy storage system gas storage according to claim 3 wherein the cross-sectional area of the side expansion section in the vertical direction decreases in sequence from top to bottom, the cross-sectional area of the upper end being the same as the cross-sectional area of the constant straight section.
5. A gravity compressed air energy storage system gas storage according to claim 4 wherein the cross sectional area of said wide straight sections in the vertical direction are all the same and the same as the cross sectional area of the bottom ends of said side-expanded sections.
6. A gravity compressed air energy storage system gas storage according to any of claims 1 to 5, further comprising an access door; the access door is arranged at the bottom of the gas storage vertical shaft and used for overhauling the sealing film.
7. A gravity compressed air energy storage system gas storage according to claim 6 further comprising a guide means disposed circumferentially of said pressure cylinder between said constant straight section and said pressure cylinder.
8. A gravity compressed air energy storage system air storage according to claim 7 wherein said guiding means comprises guide slots and rollers; wherein the guide groove is provided with a plurality of guide grooves which are respectively arranged on the inner wall of the constant straight section; the roller is matched with the guide groove and is connected with the bottom of the guide groove, so that the roller moves up and down along the bottom of the guide groove when the pressure-bearing cylinder moves up and down.
9. A gravity compressed air energy storage system gas storage according to claim 7, wherein a steel liner is provided on the inner wall of the gas storage shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222890551.2U CN218894746U (en) | 2022-10-31 | 2022-10-31 | Gravity compressed air energy storage system gas storage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222890551.2U CN218894746U (en) | 2022-10-31 | 2022-10-31 | Gravity compressed air energy storage system gas storage |
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| CN218894746U true CN218894746U (en) | 2023-04-21 |
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| CN202222890551.2U Active CN218894746U (en) | 2022-10-31 | 2022-10-31 | Gravity compressed air energy storage system gas storage |
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- 2022-10-31 CN CN202222890551.2U patent/CN218894746U/en active Active
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