CN206256940U - A kind of deep cooling liquid air energy storage systems of waste heat boosting type - Google Patents
A kind of deep cooling liquid air energy storage systems of waste heat boosting type Download PDFInfo
- Publication number
- CN206256940U CN206256940U CN201620590915.7U CN201620590915U CN206256940U CN 206256940 U CN206256940 U CN 206256940U CN 201620590915 U CN201620590915 U CN 201620590915U CN 206256940 U CN206256940 U CN 206256940U
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- Prior art keywords
- air
- energy
- liquid air
- storage systems
- heat
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- 238000004146 energy storage Methods 0.000 title claims abstract description 44
- 239000000110 cooling liquid Substances 0.000 title claims abstract description 29
- 239000002918 waste heat Substances 0.000 title claims abstract description 23
- 230000005611 electricity Effects 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 37
- 238000007906 compression Methods 0.000 claims description 19
- 238000002309 gasification Methods 0.000 claims description 19
- 238000009434 installation Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 5
- 238000010248 power generation Methods 0.000 abstract description 4
- 238000003303 reheating Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000006835 compression Effects 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
-
- 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 utility model provides a kind of deep cooling liquid air energy storage systems of waste heat boosting type, it utilizes (typically about 122 DEG C of low-grade heat after reheating in conduction oil in deep cooling liquid air energy storage systems, 53.082kg/s, conduction oil) and expand (typically about 120 DEG C of the low-grade heat that unit 7 is vented carrying during expansion power generation acting, 23.888kg/s, dry air) drive secondary Rankine cycle electricity generation system to be circulated generating, so that the waste heat energy in deep cooling liquid air energy storage systems is accessed and made full use of, waste is avoided, generating efficiency is improve.
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 deep cooling liquid of waste heat boosting type
Air energy storage systems.
Background technology
Cryogenic liquefying air energy storage technology refers to that electric energy is used for into compressed air in the network load low ebb phase, by air high pressure
It is 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 is long, it is small the advantages of do not rely on geographical conditions to take up an area.During energy storage, air is compressed, cools down and liquefy by electric energy, while storage
The heat energy discharged during this, air is heated during for releasing energy；When releasing energy, liquid air is pressurized, gasification, promotes expansion power generation
Unit generation, while the cold energy of the process is stored, cooling air during for 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 influence 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 in overcoming the energy-storage system of cryogenic liquefying air in the prior art
The circulation energy storage efficiency of presence is relatively low, operating cost technological deficiency higher.
In order to solve the above technical problems, the present invention provides a kind of deep cooling liquid air energy storage systems of waste heat boosting type, bag
Include：
Air compressor unit, including some grades of air compressors, make the gaseous state of low-temp low-pressure air boil down to HTHP
Air；
Air liquefying apparatus, is liquid air by the gaseous air liquefaction of the HTHP；
Heat-energy recovering apparatus, the heat energy to being produced in air compression process is collected；
Liquid air storage tank, stores the liquid air of the HTHP；
Gasification installation, it is the gaseous air of HTHP the liquid air of the HTHP is gasified, and receives described
The heat energy stored in heat-energy recovering apparatus；
Cold energy retracting device, to liquid air gasification for the cold energy produced during gaseous air is collected, and will be cold
During discharging to gaseous air boil down to liquid air；
Expansion unit, enter through the liquid air gaseous air that obtains of gasification driven in the expansion unit it is described swollen
Swollen unit is done manual work, and the gaseous air exported in the expansion unit reclaims input to the air compressor unit；
Also include：Secondary Rankine cycle electricity generation system, the secondary Rankine cycle electricity generation system utilizes the energy recovery
The heat energy of generation is used as energy input during the heat energy stored in device and expansion unit acting.
In the deep cooling liquid air energy storage systems of above-mentioned waste heat boosting type, the air compressor unit and the expanding machine
Heat circulation pipeline is provided between group, is flowed to by the air compressor unit and is provided with the circulation line of the expansion unit
First Heat Exchanger；Flowed to by the expansion unit and the second heat exchanger is provided with the circulation line of the air compressor unit, institute
Secondary Rankine cycle system is stated to be arranged on the circulation line.
In the deep cooling liquid air energy storage systems of above-mentioned waste heat boosting type, the secondary Rankine cycle system is arranged on institute
Expansion unit is stated to flow on the circulation line of the air compressor unit.
In the deep cooling liquid air energy storage systems of above-mentioned waste heat boosting type, the secondary Rankine cycle system with it is described
Supercharging device is additionally provided between the input port of circulation line connection and delivery outlet.
In the deep cooling liquid air energy storage systems of above-mentioned waste heat boosting type, the supercharging device is choke valve.
In the deep cooling liquid air energy storage systems of above-mentioned waste heat boosting type, the energy input devices are electronic
Machine, it converts electrical energy into mechanical energy and drives first air compression plant and the second air compression plant and liquefying plant
Acting.
In the deep cooling liquid air energy storage systems of above-mentioned waste heat boosting type, the expansion unit is at least double expansion machine
Pressure value between group, wherein each expanding machine is identical or different.
Technical solution of the present invention, has the following advantages that：
1st, in the deep cooling liquid air energy storage systems of the waste heat boosting type that the present invention is provided, it utilizes deep cooling liquid air to store up
Low-grade heat (typically about 122 DEG C, 53.082kg/s, conduction oil) and expansion unit 7 in energy system after reheating in conduction oil
Low-grade heat (typically about 120 DEG C, 23.888kg/s, the dry air) drive time of carrying is vented during expansion power generation acting
Level Rankine cycle electricity generation system is circulated generating, so that the waste heat energy in deep cooling liquid air energy storage systems is accessed and filled
Point utilize, it is to avoid waste, improve generating efficiency.
Brief description of the drawings
In order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art, below will be to specific
The accompanying drawing to be used needed for implementation method 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, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the principle schematic of the deep cooling liquid air energy storage systems of the waste heat boosting type in the embodiment of the present invention 2.
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.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is a part of embodiment of the invention, rather than whole embodiments.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 the description of the invention, it is necessary to explanation, 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 the description present invention and simplify describe, rather than indicate imply signified 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 the description of the invention, it is necessary to illustrate, 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 mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.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
Can just be combined with each other into conflict.
Embodiment 1
The present embodiment provides a kind of deep cooling liquid air energy storage systems of circulation heat, below in conjunction with Fig. 1 to the present embodiment
Energy-storage system be described in detail, 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 HTHP
Air；
Heat-energy recovering apparatus 3, the heat energy to being produced in air compression process is collected；
Liquid air storage tank 4, stores the liquid air of the HTHP；
Gasification installation 5, it is the gaseous air of HTHP the liquid air of the HTHP is gasified, and receives described
The heat energy stored in heat-energy recovering apparatus 3；
Cold energy retracting device 6, to liquid air gasification for the cold energy produced during gaseous air is collected, and will be cold
During discharging to gaseous air boil down to liquid air；
Expansion unit 7, it is described that the gaseous air obtained through liquid air gasification 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；
Also include secondary Rankine cycle electricity generation system, the secondary Rankine cycle electricity generation system is filled using the energy recovery
The heat energy produced during the heat energy and the expansion unit 7 acting stored in 3 is put as energy input.
Above-mentioned implementation method is the core technology scheme of the present embodiment, and it utilizes reheating in deep cooling liquid air energy storage systems
Low-grade heat (typically about 122 DEG C, 53.082kg/s, conduction oil) and expansion unit 7 afterwards in conduction oil does in expansion power generation
The low-grade heat (typically about 120 DEG C, 23.888kg/s, dry air) that carrying is vented during work(drives secondary Rankine cycle hair
Electric system is circulated generating, so that the waste heat energy in deep cooling liquid air energy storage systems is accessed and made full use of, it is to avoid
Waste, improve generating efficiency.
Specifically, heat circulation pipeline is provided between the air compressor unit 1 and the expansion unit 7, by institute
State air compressor unit 1 flow to it is described expansion unit 7 circulation line on be provided with First Heat Exchanger；By the expansion unit 7
The second heat exchanger is provided with the circulation line for flowing to the air compressor unit 1, the secondary Rankine cycle system is arranged on
On the circulation line.Wherein First Heat Exchanger is deep fat exchanging air, and the temperature of its interior conduction oil is of a relatively high；Second heat exchanger
It is cold oil exchanging air, the temperature of its interior conduction oil is relatively low.
Specifically, the secondary Rankine cycle system is arranged on the expansion unit 7 and flows to the air compressor unit 1
On circulation line, also set up between the input port and delivery outlet that the secondary Rankine cycle system is connected with the circulation line
There is supercharging device.Further, the supercharging device is choke valve.
In the cryogenic liquefying air energy storage systems of the storage tank boosting type of the present embodiment, energy input devices, i.e. motor, its
Convert electrical energy into mechanical energy and drive the first air compression plant and the acting of the second air compression plant, wherein the first air pressure
Compression apparatus are low pressure compressor；The compression of second air fills 4 for high pressure compressor.Specifically, the first air compression plant is to by energy
Amount input unit drives and for gaseous air to carry out one stage of compression, is still now gaseous state by the air of one stage of compression, then by one
Gas after level compression carries out two-stage compression, the second air compression plant and liquefying plant again after air cleaning unit is purified
Liquid air will be compressed into the environment of cryogenic high pressure by the air after purification, and liquid air is collected, storage to liquid
In state air reservoir 4.While two-stage compression process is carried out, heat energy of the heat-energy recovering apparatus to generation in two-stage compression process
It is collected storage.The mechanical energy that energy input devices are consumed, converts for the interior energy of liquid air, this completes energy
Storage 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 evaporator etc..Gasification installation 5 can pressurize to liquid air, so as to promote liquid air to occur
Gasification expansion, the thermal energy exchange that will be collected in thermal energy storage process is to liquid air, so that 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, is collected into 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
It is gasificated into after 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 to gasify by multiple expansion process, example
Such as, the expansion unit 7 for being used in the present embodiment can also be as the one kind in steam turbine, gas turbine or Stirling-electric hybrid or appoint
Two or three of meaning.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to the restriction of implementation method.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 and unable to be exhaustive to all of implementation method.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (7)
1. deep cooling liquid air energy storage systems of a kind of waste heat boosting type, including：
Air compressor unit (1), including some grades of air compressors, make the gaseous state of low-temp low-pressure air boil down to HTHP empty
Gas；
Air liquefying apparatus (2), is liquid air by the gaseous air liquefaction of the HTHP；
Heat-energy recovering apparatus (3), the heat energy to being produced in air compression process is collected；
Liquid air storage tank (4), stores the liquid air of the HTHP；
Gasification installation (5), the liquid air gasification for making the HTHP is the gaseous air of HTHP, and receives the heat
Can the middle heat energy for storing of retracting device (3)；
Cold energy retracting device (6), to liquid air gasification for the cold energy produced during gaseous air is collected, and by cold energy
During release to gaseous air boil down to liquid air；
Unit (7) is expanded, it is described that the gaseous air obtained through liquid air gasification enters driving in expansion unit (7)
Expansion unit (7) is done manual work, and the gaseous air of output reclaims input to the air compressor unit (1) in expansion unit (7)；
It is characterized in that：
Also include：Secondary Rankine cycle electricity generation system, the secondary Rankine cycle electricity generation system utilizes the heat-energy recovering apparatus
(3) heat energy produced during heat energy and the expansion unit (7) acting of storage in is used as energy input.
2. the deep cooling liquid air energy storage systems of waste heat boosting type according to claim 1, the air compressor unit (1)
Heat circulation pipeline is provided with and expansion unit (7) between, the expansion unit is flowed to by the air compressor unit (1)
(7) First Heat Exchanger is provided with circulation line；Following for the air compressor unit (1) is flowed to by expansion unit (7)
The second heat exchanger is provided with endless tube road, the secondary Rankine cycle system is arranged on the circulation line.
3. deep cooling liquid air energy storage systems of waste heat boosting type according to claim 2, it is characterised in that：
The secondary Rankine cycle system is arranged on the circulation pipe that expansion unit (7) flows to the air compressor unit (1)
Lu Shang.
4. deep cooling liquid air energy storage systems of waste heat boosting type according to claim 3, it is characterised in that：
Supercharging is additionally provided between the input port and delivery outlet that the secondary Rankine cycle system is connected with the circulation line
Device.
5. deep cooling liquid air energy storage systems of waste heat boosting type according to claim 4, it is characterised in that：
The supercharging device is choke valve.
6. deep cooling liquid air energy storage systems of waste heat boosting type according to claim 1, it is characterised in that：
Also include energy input devices, the energy input devices are motor, and it converts electrical energy into mechanical energy and drives institute
State air compressor unit (1) acting.
7. deep cooling liquid air energy storage systems of waste heat boosting type according to claim 1, it is characterised in that：
Expansion unit (7) is at least double expansion unit, and the wherein pressure value between each expanding machine is identical or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620590915.7U CN206256940U (en) | 2016-06-16 | 2016-06-16 | A kind of deep cooling liquid air energy storage systems of waste heat boosting type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620590915.7U CN206256940U (en) | 2016-06-16 | 2016-06-16 | A kind of deep cooling liquid air energy storage systems of waste heat boosting type |
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| Publication Number | Publication Date |
|---|---|
| CN206256940U true CN206256940U (en) | 2017-06-16 |
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| CN201620590915.7U Withdrawn - After Issue CN206256940U (en) | 2016-06-16 | 2016-06-16 | A kind of deep cooling liquid air energy storage systems of waste heat boosting type |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252750A (en) * | 2018-01-09 | 2018-07-06 | 华北电力大学（保定） | A kind of liquefied air energy-storing and power-generating system for efficiently using the heat of compression |
| CN108533343A (en) * | 2018-03-29 | 2018-09-14 | 华北电力大学 | A kind of method and system improving compressed-air energy storage efficiency using ORC |
| WO2022166387A1 (en) * | 2021-02-07 | 2022-08-11 | 百穰新能源科技(深圳)有限公司 | Energy storage device and method based on carbon dioxide gas-liquid phase change |
-
2016
- 2016-06-16 CN CN201620590915.7U patent/CN206256940U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252750A (en) * | 2018-01-09 | 2018-07-06 | 华北电力大学（保定） | A kind of liquefied air energy-storing and power-generating system for efficiently using the heat of compression |
| CN108533343A (en) * | 2018-03-29 | 2018-09-14 | 华北电力大学 | A kind of method and system improving compressed-air energy storage efficiency using ORC |
| WO2022166387A1 (en) * | 2021-02-07 | 2022-08-11 | 百穰新能源科技(深圳)有限公司 | Energy storage device and method based on carbon dioxide gas-liquid phase change |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
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 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170616 Effective date of abandoning: 20180706 |