CN206113511U - Pressure boosting type cryogenic liquefying air energy storage system - Google Patents
Pressure boosting type cryogenic liquefying air energy storage system Download PDFInfo
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- CN206113511U CN206113511U CN201620601103.8U CN201620601103U CN206113511U CN 206113511 U CN206113511 U CN 206113511U CN 201620601103 U CN201620601103 U CN 201620601103U CN 206113511 U CN206113511 U CN 206113511U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 32
- 238000002309 gasification Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims description 37
- 238000007906 compression Methods 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005338 heat storage Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 238000005057 refrigeration Methods 0.000 abstract description 6
- 230000006835 compression Effects 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model provides a pressure boosting type cryogenic liquefying air energy storage system, the air liquefying apparatus includes the refrigeration expander, and connects the upper reaches of refrigeration expander make the supercharging device that refrigeration expander outlet pressure increases. Air liquefaction process refrigeration expander can provide cold volume and be used for liquefied air, the expander that freezes simultaneously can also produce the merit, the pressure boost end is connected to the refrigeration expander, compressed air pressure further improves, therefore, the cold volume that produces behind the unit mass air expansion improves, event recycle compressor flow reduces, and simultaneously, highly -compressed air liquefying -point point risees, cold box liquefied air super -cooled rate improves, inflation back gasification volume reduces, finally reduce the power consumption of the liquefied air of unit, in order to reach the mesh that improves system energy storage efficiency.
Description
Technical field
The present invention relates to the technical field of energy storage of cryogenic liquefying air, and in particular to a kind of boosting type cryogenic liquefying air storage
Can system.
Background technology
Cryogenic liquefying air energy storage technology refers to and electric energy is used for into compressed air in the network load low ebb phase, by air high pressure
In being sealed in abandoned well, the seabed air accumulator of sedimentation, cavern, expired Oil/gas Well or newly-built gas storage well, on network load peak
The energy storage mode that phase release compressed air pushing turbine generates electricity, liquid air energy-storage system has that stored energy capacitance is larger, energy storage
Cycle length, take up an area it is little the advantages of do not rely on geographical conditions.During energy storage, air is compressed, cools down and liquefy by electric energy, while storage
Should during discharge heat energy, for release can when plus hot-air；When releasing energy, liquid air is pressurized, gasification, promotes expansion power generation
Unit generation, while the cold energy of the process is stored, for cooling air during energy storage.
But also there is following defect in existing deep cooling liquid air energy storage systems：Cryogenic liquefying air energy storage systems are easily received
To many factors such as environment, equipment and energy loss impact cause its circulation energy storage efficiency it is relatively low, operating cost compared with
It is high, it is therefore necessary to which that a kind of high-effect, inexpensive deep cooling liquid air energy storage systems are provided.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome in prior art in the energy-storage system of cryogenic liquefying air
The circulation energy storage efficiency of presence is relatively low, the higher technological deficiency of operating cost.
To solve above-mentioned technical problem, the present invention provides a kind of boosting type cryogenic liquefying air energy storage systems, including：
Air compressor unit, including some grades of air compressors, make the gaseous state of low-temp low-pressure air boil down to High Temperature High Pressure
Air；
Air liquefying apparatus, is liquid air by the gaseous air liquefaction of the High Temperature High Pressure；
Heat-energy recovering apparatus, the heat energy to producing in air compression process is collected；
Liquid air storage tank, stores the liquid air of the High Temperature High Pressure；
Gasification installation, makes the liquid air gasification of the High Temperature High Pressure for the gaseous air of High Temperature High Pressure, and receives described
The heat energy stored in heat-energy recovering apparatus；
Cold energy retracting device, is collected to liquid air gasification for the cold energy produced during gaseous air, and will be cold
During discharging to gaseous air boil down to liquid air；
Expansion unit, the gaseous air that the gasification of Jing liquid airs is obtained drives described swollen in the expansion unit
Swollen unit is done manual work, and the gaseous air exported in the expansion unit reclaims input to the air compressor unit；
Also include：The air liquefying apparatus includes refrigerating expander, and the upstream of the connection refrigerating expander, makes institute
State the pressurizer of refrigerating expander outlet pressure increase.
In above-mentioned boosting type cryogenic liquefying air energy storage systems, the air compressor unit includes recycle compressor, institute
The gaseous air flowed back in air liquefying apparatus is stated, through described into the recycle compressor described in ice chest.
In above-mentioned boosting type cryogenic liquefying air energy storage systems, the energy input devices are motor, and it is by electric energy
It is converted into mechanical energy and drives first air compression plant and the second air compression plant and liquefying plant acting.
In above-mentioned boosting type cryogenic liquefying air energy storage systems, the expansion unit is at least double expansion unit, its
In pressure value between each decompressor it is identical or different.
In above-mentioned boosting type cryogenic liquefying air energy storage systems, the heat-energy recovering apparatus are at least one heat storage can.
Technical solution of the present invention, has the advantage that：
1st, in the boosting type cryogenic liquefying air energy storage systems that the present invention is provided, the air liquefying apparatus includes that refrigeration is swollen
Swollen machine, and connect the upstream of the refrigerating expander, the pressurizer for increasing the refrigerating expander outlet pressure.Air fluid
Change process refrigerating expander can provide cold for liquefied air, while refrigerating expander can also produce work(, refrigerating expander
Connection pressurized end, compressed air pressure is further improved, therefore, the cold produced after unit mass air expansion is improved, therefore is followed
Ring compressor flowrate is reduced, meanwhile, pressure-air condensing temperature point is raised, and ice chest liquefied air degree of supercooling is improved, gas after expansion
Change amount is reduced, final to reduce the power consumption of unit liquefied air, to reach the purpose for improving system stored energy efficiency.
Description of the drawings
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to concrete
The accompanying drawing to be used needed for embodiment or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the principle schematic of the boosting type cryogenic liquefying air energy storage systems in the embodiment of the present invention 1.
Description of reference numerals：
1- air compressor units；3- heat-energy recovering apparatus；4- liquid air storage tanks；5- gasification installations；6- cold energy reclaims dress
Put；7- expands unit；8- refrigerating expanders；9- pressurizer.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described enforcement
Example is a part of embodiment of the invention, rather than the embodiment of whole.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, merely to
Be easy to description the present invention and simplify description, rather than indicate or imply indication device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
As long as additionally, technical characteristic involved in invention described below different embodiments non-structure each other
Just can be combined with each other into conflict.
Embodiment 1
The present embodiment provides a kind of boosting type cryogenic liquefying air energy storage systems, below in conjunction with storages of the Fig. 1 to the present embodiment
Energy system is described in detail, and it includes：
Air compressor unit 1, including some grades of air compressors, make the gaseous state of low-temp low-pressure air boil down to High Temperature High Pressure
Air；
Heat-energy recovering apparatus 3, the heat energy to producing in air compression process is collected；
Liquid air storage tank 4, stores the liquid air of the High Temperature High Pressure；
Gasification installation 5, makes the liquid air gasification of the High Temperature High Pressure for the gaseous air of High Temperature High Pressure, and receives described
The heat energy stored in heat-energy recovering apparatus 3；
Cold energy retracting device 6, is collected to liquid air gasification for the cold energy produced during gaseous air, and will be cold
During discharging to gaseous air boil down to liquid air；
Expansion unit 7, it is described that the gaseous air that the gasification of Jing liquid airs is obtained enters driving in the expansion unit 7
Expansion unit 7 is done manual work, and the gaseous air exported in the expansion unit 7 reclaims input to the air compressor unit 1；
The air liquefying apparatus 2 includes refrigerating expander 8, and the upstream of the connection refrigerating expander 8, makes the system
The pressurizer 9 that the outlet pressure of cold decompressor 8 increases.
Above-mentioned embodiment is the core technology scheme of the present embodiment, and the air liquefying apparatus 2 includes refrigerating expander
8, and connect the upstream of the refrigerating expander 8, the pressurizer 9 for increasing the outlet pressure of the refrigerating expander 8.Air fluid
Change process refrigerating expander 8 can provide cold for liquefied air, while refrigerating expander 8 can also produce work(, refrigerant-expansion
Machine 8 connects pressurized end 9, and compressed air pressure is further improved, therefore, the cold produced after unit mass air expansion is improved,
Therefore recycle compressor flow-reduction, meanwhile, pressure-air condensing temperature point is raised, and ice chest liquefied air degree of supercooling is improved, expansion
Afterwards amount of vaporization is reduced, final to reduce the power consumption of unit liquefied air, to reach the purpose for improving system stored energy efficiency.
As shown in figure 1, the air compressor unit 1 includes recycle compressor, flow back in the air liquefying apparatus 2
Gaseous air, through described into the recycle compressor described in ice chest.
In the boosting type cryogenic liquefying air energy storage systems of the present embodiment, energy input devices, i.e. motor, it is by electric energy
It is converted into mechanical energy and drives the first air compression plant and the acting of the second air compression plant, wherein the first air compression plant
For low pressure compressor；The compression of second air fills 4 for high pressure compressor.Specifically, the first air compression plant is to by energy input
Device drives and for gaseous air to carry out one stage of compression, and now the air through one stage of compression is still gaseous state, then by one stage of compression
Gas afterwards carries out again two-stage compression after air cleaner purification, and the second air compression plant and liquefying plant will be passed through
Air after purification is compressed into liquid air in the environment of cryogenic high pressure, and liquid air is collected, and stores to liquid air
In storage tank 4.While two-stage compression process is carried out, heat-energy recovering apparatus are received to the heat energy produced in two-stage compression process
Collection storage.The mechanical energy that energy input devices are consumed, converts for the interior energy of liquid air, this completes the storage of energy
Process.
The release process of energy is：
Liquid air is stored in liquefied air storage tank 4, and liquid air is exported to gasification installation 5 by equipment such as cyropumps
In, the gasification installation 5 is including vaporizer etc..Gasification installation 5 can pressurize to liquid air, so as to promote liquid air to occur
Gasification expansion, by the thermal energy exchange collected in thermal energy storage process to liquid air, so as to promote the lifting of liquid air gasification rate,
And the enthalpy of gaseous air is improved, the mechanical efficiency and dynamic responding speed of the gaseous air are improved, in liquid air gasification
While, cold energy retracting device 6 is collected to the cold energy produced by liquid air gasification, collects in cold energy retracting device 6
Cold energy can be used in thermal energy storage process, in the first air compression plant and the second air compression plant.Further, liquid air
After being gasificated into gaseous state, the expansion expansion work of unit 7 can be driven, so as to complete exoergic process.
It should be noted that in practical work process, liquid air is to complete gasification by multiple expansion process,
For example, the expansion unit 7 used in the present embodiment can also be as the one kind in steam turbine, gas turbine or Stirling-electric hybrid or
Any two or three.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (4)
1. a kind of boosting type cryogenic liquefying air energy storage systems, including：
Air compressor unit (1), including some grades of air compressors, make the gaseous state of low-temp low-pressure air boil down to High Temperature High Pressure empty
Gas；
Air liquefying apparatus (2), is liquid air by the gaseous air liquefaction of the High Temperature High Pressure；
Heat-energy recovering apparatus (3), the heat energy to producing in air compression process is collected；
Liquid air storage tank (4), stores the liquid air of the High Temperature High Pressure；
Gasification installation (5), makes the liquid air gasification of the High Temperature High Pressure for the gaseous air of High Temperature High Pressure, and receives the heat
Can the middle heat energy for storing of retracting device (3)；
Cold energy retracting device (6), is collected to liquid air gasification for the cold energy produced during gaseous air, and by cold energy
During discharging to gaseous air boil down to liquid air；
Expansion unit (7), the gaseous air that the gasification of Jing liquid airs is obtained drives described in expansion unit (7)
Expansion unit (7) acting, the gaseous air of output reclaims input to the air compressor unit (1) in expansion unit (7)；
It is characterized in that：
The air liquefying apparatus (2) is including refrigerating expander (8), and the upstream of the connection refrigerating expander (8), makes described
The pressurizer (9) that refrigerating expander (8) outlet pressure increases.
2. boosting type cryogenic liquefying air energy storage systems according to claim 1, it is characterised in that：
The air compressor unit (1) includes the gaseous air of backflow in recycle compressor, the air liquefying apparatus (2), Jing
Cross described into the recycle compressor described in ice chest.
3. boosting type cryogenic liquefying air energy storage systems according to claim 2, it is characterised in that：
Expansion unit (7) is at least double expansion unit, and the wherein pressure value between each decompressor is identical or different.
4. boosting type cryogenic liquefying air energy storage systems according to claim 1, it is characterised in that：
The heat-energy recovering apparatus (3) are at least one heat storage can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620601103.8U CN206113511U (en) | 2016-06-17 | 2016-06-17 | Pressure boosting type cryogenic liquefying air energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620601103.8U CN206113511U (en) | 2016-06-17 | 2016-06-17 | Pressure boosting type cryogenic liquefying air energy storage system |
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| Publication Number | Publication Date |
|---|---|
| CN206113511U true CN206113511U (en) | 2017-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928321A (en) * | 2016-06-17 | 2016-09-07 | 全球能源互联网研究院 | Supercharge type cryogenic liquefied air energy storage system |
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2016
- 2016-06-17 CN CN201620601103.8U patent/CN206113511U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928321A (en) * | 2016-06-17 | 2016-09-07 | 全球能源互联网研究院 | Supercharge type cryogenic liquefied air energy storage system |
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Address after: 102209 Beijing City, the future of science and Technology City Binhe Road, No. 18, No. Co-patentee after: State Grid Corporation of China Patentee after: Global energy Internet Institute, Inc. Address before: 102211 Beiqijia Town, Beijing, Changping District, future technology North Zone National Grid hospital Co-patentee before: State Grid Corporation of China Patentee before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE |