CN217816205U - Compressed air is gas storage device for energy storage system - Google Patents
Compressed air is gas storage device for energy storage system Download PDFInfo
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- CN217816205U CN217816205U CN202221783171.2U CN202221783171U CN217816205U CN 217816205 U CN217816205 U CN 217816205U CN 202221783171 U CN202221783171 U CN 202221783171U CN 217816205 U CN217816205 U CN 217816205U
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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
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Abstract
The utility model discloses a compressed air is gas storage device for energy storage system, including a plurality of gas storage unit, the gas storage unit includes a plurality of seamless bottle formula container and 2 braced frame that are used for the gas storage, 2 braced frame symmetrical arrangement in the both ends of seamless bottle formula container, the tip of seamless bottle formula container pass through mounting flange with braced frame links to each other. Compared with the prior art, the utility model discloses gas storage device's simple structure, the security is high, and gas storage density is high, the length of labour cycle is long, whole weight reduction, and the field installation arranges the convenience, does not receive geographical environment and spatial condition's restriction, and the volume of storing can increase and decrease in a flexible way, can satisfy the demand of different gas storage scales.
Description
Technical Field
The utility model relates to a compressed air energy storage field especially relates to a compressed air is gas storage device for energy storage system.
Background
In order to solve the problem of large difference of power consumption of the traditional power grid in peak and valley and the problems of wind abandonment and light abandonment of wind energy and solar energy power generation, the compressed air energy storage power generation technology is applied. The single machine capacity of the compressed air energy storage power generation system is more than 100MW, the matching degree with the traditional power grid is high, and the compressed air energy storage power generation system has the advantages of long energy storage period, small unit energy storage investment and long service life, so that the compressed air energy storage power generation technology can be rapidly developed. The compressed air storage device is an important component of the air energy storage power generation system and is directly related to the installed capacity and the stable operation of the air energy storage power generation system. The traditional compressed air energy storage power generation system utilizes rock caves, salt caves, abandoned mines and the like as gas storage devices, has high dependence on the geographic environment, and has low air storage density and high air leakage rate.
The Chinese patent with the application number of 202121889010.7 discloses a gas storage device of a compressed air energy storage system, which comprises a motor, an air compressor, a first heat exchanger, a second heat exchanger, an air expander, a generator, a heat accumulator, an air inlet pipeline, an exhaust pipeline, an air storage bag group and a pit well; the interior of the well is filled with pressure solution, and the bottom of the well is fixedly provided with an air storage bag group; the air storage bag set at least comprises one air storage bag; the air storage bag is sequentially connected with a first heat exchanger, an air compressor and a motor which are arranged outside the pit through an air inlet pipeline, and is sequentially connected with a second heat exchanger, an air expander and a generator which are arranged outside the pit through an air outlet pipeline; the heat release side of the first heat exchanger and the heat absorption side of the second heat exchanger are communicated through a heat accumulator; and the joints of the air storage bag and the air inlet pipeline and the exhaust pipeline are respectively provided with an air inlet sealing valve and an exhaust sealing valve.
The Chinese patent with the application number of 202121889009.4 discloses a gravity compressed air energy storage gas storage device, which comprises a vertical shaft, a gravity pressing block and a gas storage bag which are sequentially arranged in the vertical shaft from top to bottom, and an air inlet sealing valve and an air outlet sealing valve which are arranged at the bottom of the vertical shaft; the air storage bag is wrapped outside the air inlet sealing valve and the air outlet sealing valve, and a gravity pressing block is arranged outside the top of the air storage bag; the air inlet sealing valve is connected with an air inlet pipeline extending out of the vertical shaft; the input end of the air inlet pipeline extending out of the vertical shaft is sequentially provided with a motor, an air compressor and a first heat exchanger, and an exhaust pipeline extending out of the vertical shaft is connected to an exhaust sealing valve; the output end of the exhaust pipeline extending out of the vertical shaft is sequentially provided with a second heat exchanger, an air expander and a generator; the heat-releasing side of the first heat exchanger and the heat-absorbing side of the second heat exchanger are communicated through the heat accumulator.
The air storage devices disclosed in the above patents all adopt an air storage bag form, the air storage bag is formed by high-frequency welding of an air bag film into a closed air storage space, the diameter range is 15m-25m, and air bag reinforcing ribs arranged in an annular array are wrapped outside the air bag film to form an external framework structure of the air storage bag; the air bag film reinforcing rib is fixed at the bottom of the well through a fixed hinge. The gas storage device can improve a larger gas storage space, but because the strength of the gas bag is not high, the gas storage pressure is low, the safety factor is low, and the gas storage device must be placed in a well for safety protection.
In addition, in the prior art, the two ends of a large-diameter welded pipe are welded with end sockets to serve as gas storage tanks, and a large number of gas storage tanks are connected in parallel to serve as gas storage devices. However, such a gas tank is not designed and manufactured in accordance with the standard of the pressing-force container, and therefore, the gas tank is not high in safety margin, and is not economical because of a large amount of work for welding and X-ray inspection. Therefore, a gas storage device with high safety, high gas storage density and good economical efficiency is urgently needed to be designed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the above-mentioned problem, provide a compressed air is gas storage device for energy storage system to solve the problem that provides in the above-mentioned background art.
The utility model aims at realizing through the following technical scheme:
the utility model provides a compressed air is gas storage device for energy storage system, includes a plurality of gas storage unit, the gas storage unit includes a plurality of seamless bottle formula container and 2 braced frame that are used for the gas storage, 2 braced frame symmetrical arrangement in the both ends of seamless bottle formula container, the tip of seamless bottle formula container pass through mounting flange with braced frame links to each other.
As an optimized proposal of the utility model, the 2 supporting frames are arranged in a bilateral symmetry way, and the seamless bottle type container is arranged horizontally.
As an optimized proposal of the utility model, 4 mounting holes used for fixing the seamless bottle type container are arranged on the supporting frame, and the 4 mounting holes are distributed in a matrix.
As a preferred embodiment of the present invention, the supporting frame is a rectangular structure.
As an optimized scheme of the utility model, a plurality of gas storage unit stack from top to bottom and constitute first gas storage unit group, a plurality of first gas storage unit group arranges along the horizontal arrangement and constitutes first gas storage module.
As another preferred scheme of the utility model, 2 braced frame be upper and lower symmetrical arrangement, seamless bottle formula container is arranged along vertical direction.
As another preferred scheme of the utility model, 3 fixed orificess that are used for fixed seamless bottle formula container are seted up on the braced frame, 3 fixed orificess be triangular distribution.
As another preferable aspect of the present invention, the supporting frame has a triangular structure.
As another preferred embodiment of the present invention, the plurality of gas storage units are arranged along the transverse direction in sequence in a staggered manner to form a second gas storage unit group, and the second gas storage unit group is arranged along the longitudinal direction to form a second gas storage module.
The beneficial effects of the utility model are that, compared with the prior art, the utility model has the advantages of it is following:
1. the gas storage device has simple structure, high safety, high gas storage density, long service cycle and light whole weight, and can reduce the initial investment of projects;
2. the on-site installation and arrangement are convenient, the device is not limited by geographical environment and space conditions, the storage volume can be flexibly increased and decreased, and the requirements of different gas storage scales can be met;
3. the stable air flow output can avoid the occurrence of sliding pressure at the inlet of the air expander, thereby reducing the pressure fluctuation of the system and leading the energy conversion to be carried out in a stable and efficient interval;
4. the sequence of deflation can be controlled according to needs, so that the seamless bottle type containers with different quantities can be opened for air supply, the air storage efficiency and the utilization efficiency of the air storage device are improved, and the energy conversion efficiency is improved.
Drawings
FIG. 1 is a front view of an air storage unit of an air storage device for a compressed air energy storage system;
FIG. 2 is a side view of an air storage unit of an air storage device for a compressed air energy storage system;
FIG. 3 is a front view of an alternative air storage unit of the air storage device for a compressed air energy storage system;
FIG. 4 is a schematic view of FIG. 3 taken along line A;
fig. 5 is a schematic structural diagram of the second gas storage unit group.
In the figure:
1. a seamless bottle container; 2. a support frame; 3. a valve; 4. a safety valve.
11. A seamless bottle-type container; 12. a support frame; 13. a vertical support beam; 14. and a gas storage unit.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the drawings. It is to be understood that the embodiments described herein are merely illustrative of the present invention and are not limiting thereof.
Example one
Referring to fig. 1 and 2, fig. 1 is a front view of an air storage unit of an air storage device for a compressed air energy storage system; FIG. 2 is a side view of an air storage unit of an air storage device for a compressed air energy storage system.
In this embodiment, a compressed air is gas storage device for energy storage system, includes a plurality of gas storage unit, the gas storage unit includes a plurality of seamless bottle formula container 1 and 2 braced frame 2 that are used for the gas storage, 2 braced frame 2 symmetrical arrangement in both ends about seamless bottle formula container 1, the tip of seamless bottle formula container 1 pass through mounting flange with braced frame 2 links to each other, just seamless bottle formula container 1 is the level and arranges.
Specifically, in this embodiment, the supporting frame 2 is provided with 4 mounting holes for fixing the seamless bottle type containers 1, the 4 mounting holes are distributed in a matrix, and correspondingly, in this embodiment, the pair of supporting frames 2 are provided with 4 seamless bottle type containers 1.
Specifically, in this embodiment, the supporting frame 2 has a rectangular structure.
Specifically, in this embodiment, the plurality of gas storage units are stacked up and down to form a first gas storage unit group, and the plurality of first gas storage unit groups are arranged horizontally to form a first gas storage module.
Outlets at two ends of the seamless bottle type container 1 are connected with end plugs through straight threads, wherein the end plug at one end is used for installing a valve 3 for air inlet and outlet, and the other end can be used for installing a safety valve 4. The outer surface of the bottle mouth of the seamless bottle type container 1 is also processed with external threads, the seamless bottle type container 1 is connected with the mounting flange through the external threads, and then the seamless bottle type container 1 is fixed on the supporting frame 2 in a hanging mode through the mounting flange.
The air storage units can be flexibly combined and arranged in the compressed air energy storage system, the air storage units with the same size can be stacked above the air storage units, and the support frames 2 of the lower air storage units and the support frames 2 of the upper air storage units are connected together through bolts. The thickness of the support frame 2 of the lower air storage unit is greater than that of the support frame 2 of the upper air storage unit so as to provide sufficient support strength and rigidity. The first gas storage unit group is composed of 2 to 8 gas storage units which are vertically stacked and fixed together, and the first gas storage module is composed of a plurality of first gas storage unit groups which are horizontally arranged in parallel.
A plurality of first air storage modules can be configured on an air storage device in the compressed air energy storage system according to the requirement of the total air storage quantity, and the first air storage modules can be arranged and installed according to the spatial layout of a project site. The seamless bottle type container 1 in one first gas storage module can be piping in two ways. The first piping method is as follows: the air inlets and the air outlets of the seamless bottle type containers 1 which are positioned on the same row in the vertical direction in one first air storage module are connected together through the pipe, and are provided with pneumatic or electric valves to form one air storage row, and all the air storage rows in the first air storage module are connected through the pipe to be converged. The second piping method is as follows: the air inlets and the air outlets of the seamless bottle type containers 1 which are arranged on the same row in the horizontal direction in a first air storage module are connected together through a pipe, a pneumatic or electric valve is arranged to form an air storage row, and all the air storage rows in the first air storage module are connected through the pipe to be converged.
The gas storage device is provided with a sequence control system which automatically controls the inflation and deflation processes of the gas storage device. When in inflation, the sequence control system controls the pneumatic valves/electric valves of the gas storage rows/gas storage rows, firstly, the set gas storage row or rows are inflated, after the set pressure is charged, the pneumatic valves/electric valves of the gas storage row/gas storage row are closed, and then the pneumatic valves/electric valves of the subsequent gas storage row or rows are opened according to the set sequence for inflation. After all the gas storage columns/gas storage rows are inflated for one time in sequence, the sequence control system detects the actual pressure of each gas storage column/gas storage row. Because the temperature of the gas in the seamless bottle type container rises in the process of inflation, the pressure is reduced after the temperature of the gas in the seamless bottle type container is reduced to the environmental temperature, and if the difference value between the actual pressure and the set rated storage pressure exceeds the set threshold value, the sequence control system can open the pneumatic valve/electric valve of the gas storage row/gas storage row again to supplement the gas so as to reach the rated gas storage pressure.
When in air discharge, the sequence control system simultaneously opens one or more pneumatic valves/electric valves of the air storage row/air storage row according to the set air flow demand to supply air for the air expander. When the air flow and/or pressure is below a set threshold, the sequence control system opens another pneumatic/electric valve of one or more of the rows, continues to supply air to the air expander, and closes the pneumatic/electric valve of the row/row at a pressure below the set value. And performing the operation according to the operation until all the gas storage rows/gas storage rows complete one gas supply operation. At this moment, the sequence control system monitors the actual pressure of the air storage device in real time, and if the difference value between the actual air storage pressure and the working pressure of the air expansion machine is larger than the set threshold value, the sequence control system can supply air to the air expansion machine continuously through more air storage rows/air storage rows, so that stable flow output in the whole air supply period can be ensured, and the utilization efficiency of the air storage device can be improved.
Example two
Referring to fig. 3 to 5, fig. 3 is a front view of an air storage unit of another air storage device for a compressed air energy storage system; FIG. 4 is a schematic view of the direction A of FIG. 3; fig. 5 is a schematic structural view of the second gas storage unit group.
The utility model provides a compressed air is air storage device for energy storage system, includes a plurality of air storage unit 14, air storage unit 14 includes a plurality of seamless bottle formula container 11 and 2 braced frame 12 that are used for the air storage, 2 braced frame 12 symmetrical arrangement in seamless bottle formula container 11's upper and lower both ends, seamless bottle formula container 11's tip pass through mounting flange with braced frame 12 links to each other, just seamless bottle formula container 11 arranges along vertical direction.
Specifically, in this embodiment, the supporting frame 12 is provided with 3 fixing holes for fixing the seamless bottle-type container 11, the 3 fixing holes are distributed in a triangular shape, and correspondingly, in this embodiment, 3 seamless bottle-type containers 11 are installed between a pair of supporting frames 12.
Specifically, in this embodiment, the 10 gas storage units 14 are sequentially arranged in a staggered manner along the transverse direction to form a second gas storage unit group, and the 12 second gas storage unit groups are arranged in a longitudinal direction to form a second gas storage module.
Specifically, in this embodiment, the supporting frame 12 is a triangular structure, and is composed of three horizontal supporting beams and supporting plates, and the supporting plates are fixed on the horizontal supporting beams by bolts. The supporting plate is provided with a fixing hole for fixing and screwing the mounting flange at the opening of the seamless bottle type container 11. The upper and lower supporting frames 12 are connected through three vertical supporting beams 13, the lower ends of the vertical supporting beams 13 are welded with fixing plates, and foundation bolt holes are formed in the fixing plates and fixed on a concrete foundation through foundation bolts. The support frame 12 is a triangular structure with high stability, and the support structure is designed and strength checked according to weight loads, airflow impact loads, seismic loads and wind loads.
The 3 second gas storage modules form the whole gas storage device, and the gas storage device comprises 1080 bottle-type containers which can provide 8800m 3 A water-containing gas storage space.
The air inlets/outlets of the bottle-type containers transversely positioned on the same row in one second air storage module are connected together through a pipe, and are provided with electric valves and blow-down valves to form one air storage row, and 24 air storage rows in the second air storage module are connected through pipes to converge and are connected to a buffer tank at the outlet of the compressor and a buffer tank at the inlet of the air expander.
The above embodiments have only been illustrated the basic principle and characteristics of the present invention, the present invention is not limited by the above embodiments, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these changes and modifications all fall into the scope of the present invention. The scope of protection of the invention is defined by the claims that follow.
Claims (9)
1. The utility model provides a compressed air is gas storage device for energy storage system, includes a plurality of gas storage unit, its characterized in that: the gas storage unit comprises a plurality of seamless bottle type containers for gas storage and 2 supporting frames, wherein the 2 supporting frames are symmetrically arranged at two ends of the seamless bottle type containers, and the end parts of the seamless bottle type containers are connected with the supporting frames through mounting flanges.
2. A gas storage device for a compressed air energy storage system according to claim 1, wherein: the 2 supporting frames are arranged in a bilateral symmetry mode, and the seamless bottle type container is arranged horizontally.
3. A gas storage device for a compressed air energy storage system according to claim 2, wherein: the supporting frame is provided with 4 mounting holes for fixing the seamless bottle type container, and the 4 mounting holes are distributed in a matrix manner.
4. A gas storage device for a compressed air energy storage system according to claim 3, wherein: the support frame is of a rectangular structure.
5. The air storage device of claim 4, wherein: the plurality of gas storage units are stacked up and down to form a first gas storage unit group, and the plurality of first gas storage unit groups are horizontally arranged to form a first gas storage module.
6. A gas storage device for a compressed air energy storage system according to claim 1, wherein: the 2 supporting frames are symmetrically arranged up and down, and the seamless bottle type container is arranged along the vertical direction.
7. The air storage device of claim 6, wherein: the supporting frame is provided with 3 fixing holes for fixing the seamless bottle type container, and the 3 fixing holes are distributed in a triangular shape.
8. The air storage device of claim 7, wherein: the supporting frame is of a triangular structure.
9. The air storage device of claim 8, wherein: the plurality of gas storage units are sequentially arranged in a staggered mode along the transverse direction to form a second gas storage unit group, and the plurality of second gas storage unit groups are arranged in a longitudinal direction to form a second gas storage module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221783171.2U CN217816205U (en) | 2022-07-11 | 2022-07-11 | Compressed air is gas storage device for energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221783171.2U CN217816205U (en) | 2022-07-11 | 2022-07-11 | Compressed air is gas storage device for energy storage system |
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| Publication Number | Publication Date |
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| CN217816205U true CN217816205U (en) | 2022-11-15 |
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| CN202221783171.2U Active CN217816205U (en) | 2022-07-11 | 2022-07-11 | Compressed air is gas storage device for energy storage system |
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| CN (1) | CN217816205U (en) |
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- 2022-07-11 CN CN202221783171.2U patent/CN217816205U/en active Active
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