CN105928321B - A kind of boosting type cryogenic liquefying air energy storage systems - Google Patents
A kind of boosting type cryogenic liquefying air energy storage systems Download PDFInfo
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- CN105928321B CN105928321B CN201610430507.XA CN201610430507A CN105928321B CN 105928321 B CN105928321 B CN 105928321B CN 201610430507 A CN201610430507 A CN 201610430507A CN 105928321 B CN105928321 B CN 105928321B
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- air
- energy
- pressure
- liquefying
- gaseous
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- 238000004146 energy storage Methods 0.000 title claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 37
- 238000007906 compression Methods 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 17
- 238000002309 gasification Methods 0.000 claims description 13
- 238000003860 storage Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 4
- 238000005338 heat storage Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 238000011144 upstream manufacturing Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000004781 supercooling Methods 0.000 abstract description 3
- 230000008016 vaporization Effects 0.000 abstract description 2
- 238000009834 vaporization Methods 0.000 abstract description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/02—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-expansion type
Abstract
The present invention provides a kind of boosting type cryogenic liquefying air energy storage systems, and the air liquefying apparatus includes refrigerating expander, and the upstream of the connection refrigerating expander, makes the increased supercharging device of refrigerating expander outlet pressure.Air liquefaction process refrigerating expander can provide cooling capacity for liquefied air, while refrigerating expander can also generate function, and refrigerating expander connects pressurized end, compressed air pressure further increases, therefore, the cooling capacity generated after the expansion of unit mass air improves, therefore recycle compressor flow-reduction, simultaneously, pressure-air condensing temperature point increases, and ice chest liquefied air degree of supercooling improves, and amount of vaporization is reduced after expansion, it is final to reduce the energy consumption of unit liquefied air, to achieve the purpose that improve system stored energy 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
It can system.
Background technique
Cryogenic liquefying air energy storage technology, which refers to, is used for compressed air for electric energy in network load trough period, 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
Phase discharges the energy storage mode of compressed air pushing turbine power generation, the larger, energy storage with stored energy capacitance of liquid air energy-storage system
Period is long, the advantages that taking up little area independent of geographical conditions.When energy storage, electric energy is by air compression, cooling and liquefies, and stores simultaneously
The thermal energy discharged during this heats air when for releasing energy；When releasing energy, liquid air is pressurized, gasifies, and pushes expansion power generation
Unit generation, while the cold energy of the process is stored, it is used for cooling air when energy storage.
But there is also following defects for existing deep cooling liquid air energy storage systems: cryogenic liquefying air energy storage systems be easy by
To many factors such as environment, equipment and energy loss influence cause its recycle energy storage efficiency it is lower, 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.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming in the energy-storage system of cryogenic liquefying air in the prior art
Existing circulation energy storage efficiency is lower, the higher technological deficiency of operating cost.
In order to solve the above technical problems, the present invention provides a kind of boosting type cryogenic liquefying air energy storage systems, comprising:
Air compressor unit, including several grades of air compressors, make the gaseous state of low-temp low-pressure air boil down to high temperature and pressure
Air；
Air liquefying apparatus liquefies the gaseous air of the high temperature and pressure for liquid air；
Heat-energy recovering apparatus is collected the thermal energy generated in air compression process；
Liquid air storage tank stores the liquid air of the high temperature and pressure；
Gasification installation, so that the liquid air of the high temperature and pressure is gasified is the gaseous air of high temperature and pressure, and described in reception
The thermal energy stored in heat-energy recovering apparatus；
Cold energy recyclable device is collected liquid air gasification for the cold energy generated during gaseous air, and will be cold
During capable of discharging to gaseous air boil down to liquid air；
Expand unit, the gaseous air to gasify through liquid air enter the expansion unit in drive it is described swollen
Swollen unit is done manual work, and the gaseous air recycling exported in the expansion unit is input to the air compressor unit；
Further include: the air liquefying apparatus includes refrigerating expander, and the upstream of the connection refrigerating expander, makes institute
State the increased supercharging device of refrigerating expander outlet pressure.
In above-mentioned boosting type cryogenic liquefying air energy storage systems, the air compressor unit includes recycle compressor, institute
The gaseous air to flow back in air liquefying apparatus is stated, enters the recycle compressor by described described in ice chest.
In above-mentioned boosting type cryogenic liquefying air energy storage systems, the energy input devices are motor, by electric energy
It is converted into mechanical energy and first air compression plant and the second air compression plant and liquefying plant is driven to do work.
In above-mentioned boosting type cryogenic liquefying air energy storage systems, the expansion unit is at least double expansion unit,
In pressure value between each expanding machine it is identical or different.
In above-mentioned boosting type cryogenic liquefying air energy storage systems, the heat-energy recovering apparatus is at least one heat storage can.
Technical solution of the present invention has the advantages that
1, in boosting type cryogenic liquefying air energy storage systems provided by the invention, the air liquefying apparatus includes that refrigeration is swollen
Swollen machine, and the upstream of the connection refrigerating expander, make the increased supercharging device of refrigerating expander outlet pressure.Air fluid
Change process refrigerating expander can provide cooling capacity for liquefied air, while refrigerating expander can also generate function, refrigerating expander
Pressurized end is connected, compressed air pressure further increases, and therefore, the cooling capacity generated after the expansion of unit mass air improves, therefore follows
Ring compressor flowrate reduces, meanwhile, pressure-air condensing temperature point increases, and ice chest liquefied air degree of supercooling improves, gas after expansion
Change amount is reduced, final to reduce the energy consumption of unit liquefied air, to achieve the purpose that improve system stored energy efficiency.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic illustration of the boosting type cryogenic liquefying air energy storage systems in the embodiment of the present invention 1.
Description of symbols:
1- air compressor unit；3- heat-energy recovering apparatus；4- liquid air storage tank；5- gasification installation；6- cold energy recycling dress
It sets；7- expands unit；8- refrigerating expander；9- supercharging device.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment 1
The present embodiment provides a kind of boosting type cryogenic liquefying air energy storage systems, the storage below in conjunction with Fig. 1 to the present embodiment
Energy system is described in detail comprising:
Air compressor unit 1, including several grades of air compressors, make the gaseous state of low-temp low-pressure air boil down to high temperature and pressure
Air；
Heat-energy recovering apparatus 3 is collected the thermal energy generated in air compression process；
Liquid air storage tank 4 stores the liquid air of the high temperature and pressure；
Gasification installation 5, so that the liquid air of the high temperature and pressure is gasified is the gaseous air of high temperature and pressure, and described in reception
The thermal energy stored in heat-energy recovering apparatus 3；
Cold energy recyclable device 6 is collected liquid air gasification for the cold energy generated during gaseous air, and will be cold
During capable of discharging to gaseous air boil down to liquid air；
Unit 7 is expanded, the gaseous air to gasify through liquid air enters in the expansion unit 7 described in driving
It expands unit 7 to do manual work, the gaseous air recycling exported in the expansion unit 7 is 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 cold increased supercharging device 9 of 8 outlet pressure of expanding machine.
Above embodiment is the core technology scheme of the present embodiment, and the air liquefying apparatus 2 includes refrigerating expander
8, and the upstream of the connection refrigerating expander 8, make the increased supercharging device 9 of 8 outlet pressure of refrigerating expander.Air fluid
Change process refrigerating expander 8 can provide cooling capacity for liquefied air, while refrigerating expander 8 can also generate function, refrigerant-expansion
Machine 8 connects pressurized end 9, and compressed air pressure further increases, and therefore, the cooling capacity generated after the expansion of unit mass air improves,
Therefore recycle compressor flow-reduction, meanwhile, pressure-air condensing temperature point increases, and ice chest liquefied air degree of supercooling improves, expansion
Amount of vaporization is reduced afterwards, final to reduce the energy consumption of unit liquefied air, to achieve the purpose that improve system stored energy efficiency.
As shown in Figure 1, the air compressor unit 1 includes recycle compressor, the gas to flow back in the air liquefying apparatus 2
State air enters the recycle compressor by described described in ice chest.
In the boosting type cryogenic liquefying air energy storage systems of the present embodiment, energy input devices, i.e. motor, 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 as high pressure compressor.Specifically, the first air compression plant is to by energy input
Gaseous air is carried out one stage of compression by device driving, is still at this time gaseous state by the air of one stage of compression, then by one stage of compression
Gas afterwards carries out two-stage compression after purifying by air cleaning unit again, and the second air compression plant and liquefying plant will pass through
Purified air is compressed into liquid air in the environment of cryogenic high pressure, and liquid air is collected, storage to liquid air
In storage tank 4.While two-stage compression process carries out, heat-energy recovering apparatus receives the thermal energy generated in two-stage compression process
Collection storage.Mechanical energy consumed by energy input devices converts the interior energy for liquid air, and this completes the storages of energy
Process.
The release process of energy are as follows:
Liquid air is stored in liquefied air storage tank 4, and liquid air is exported by equipment such as cyropumps to gasification installation 5
In, the gasification installation 5 is including evaporator etc..Gasification installation 5 can pressurize to liquid air, to promote liquid air
Gasification expansion, by the thermal energy exchange collected in thermal energy storage process to liquid air, to promote mentioning for liquid air gasification rate
It rises, and improves the enthalpy of gaseous air, the mechanical efficiency and dynamic responding speed of the gaseous air are improved, in liquid air gas
While change, cold energy recyclable device 6 is collected cold energy caused by liquid air gasification, collects in cold energy recyclable device 6
To cold energy can be used in thermal energy storage process, in the first air compression plant and the second air compression plant.Further, liquid is empty
Gas is gasificated into after gaseous state, expansion 7 expansion work of unit can be driven, so as to complete exoergic process.
It should be noted that liquid air is to complete to gasify by multiple expansion process, example in practical work process
Such as, expansion unit 7 used in the present embodiment can also be as one of steam turbine, gas turbine or Stirling-electric hybrid or appoint
Two or three of meaning.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (4)
1. a kind of boosting type cryogenic liquefying air energy storage systems, comprising:
Air compressor unit (1), including several grades of air compressors keep the gaseous state of low-temp low-pressure air boil down to high temperature and pressure empty
Gas；
Air liquefying apparatus (2), the gaseous air of the high temperature and pressure is liquefied as liquid air；
Heat-energy recovering apparatus (3) is collected the thermal energy generated in air compression process；
Liquid air storage tank (4), stores the liquid air of the high temperature and pressure；
Gasification installation (5), so that the liquid air of the high temperature and pressure is gasified is the gaseous air of high temperature and pressure, and receives the heat
It can the middle thermal energy stored of recyclable device (3)；
Cold energy recyclable device (6), is that the cold energy generated during gaseous air is collected to liquid air gasification, and by cold energy
During release to gaseous air boil down to liquid air；
It expands unit (7), the gaseous air to gasify through liquid air enters in the expansion unit (7) described in driving
Unit (7) workmanship is expanded, the gaseous air recycling exported in expansion unit (7) is input to the air compressor unit (1)；
It is characterized by:
The air compressor unit (1) includes recycle compressor, the gaseous air to flow back in the air liquefying apparatus (2), warp
Ice chest is crossed into the recycle compressor；
The air liquefying apparatus (2) includes refrigerating expander (8), and is disposed adjacent and connect with the refrigerating expander (8)
The supercharging device (9) swum thereon, the supercharging device increase the outlet pressure of the refrigerating expander (8), improve unit matter
The cooling capacity generated after amount air expansion, while improving air liquefaction temperature spot.
2. boosting type cryogenic liquefying air energy storage systems according to claim 1, it is characterised in that:
It further include energy input devices, the energy input devices are motor, convert electrical energy into mechanical energy and drive the
One air compression plant, the second air compression plant and liquefying plant acting.
3. boosting type cryogenic liquefying air energy storage systems according to claim 2, it is characterised in that:
The expansion unit (7) is at least double expansion unit, wherein the pressure value between each expanding machine 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) is at least one heat storage can.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610430507.XA CN105928321B (en) | 2016-06-17 | 2016-06-17 | A kind of boosting type cryogenic liquefying air energy storage systems |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610430507.XA CN105928321B (en) | 2016-06-17 | 2016-06-17 | A kind of boosting type cryogenic liquefying air energy storage systems |
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| CN105928321A CN105928321A (en) | 2016-09-07 |
| CN105928321B true CN105928321B (en) | 2019-07-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240734B (en) * | 2018-03-08 | 2024-03-26 | 李佳晨 | Air supply system of booster expander and air separation equipment |
| CN108444215A (en) * | 2018-03-27 | 2018-08-24 | 俞琦 | A kind of air liquefaction plant |
| CN111288746A (en) * | 2020-03-03 | 2020-06-16 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Air liquefaction regasification device and use method thereof in submersible diving system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001090509A (en) * | 1999-09-24 | 2001-04-03 | Toyoshi Sakata | Cryogenic power generating system using liquid air |
| JP3646630B2 (en) * | 2000-07-27 | 2005-05-11 | 株式会社日立製作所 | Thermal storage / cold storage tank |
| CN102758690B (en) * | 2012-07-29 | 2014-08-27 | 中国科学院工程热物理研究所 | Efficient high-pressure liquid air energy storage/release system |
| CN102758689B (en) * | 2012-07-29 | 2015-03-04 | 中国科学院工程热物理研究所 | Ultra-supercritical air energy storage/release system |
| CN202970911U (en) * | 2012-12-06 | 2013-06-05 | 中国科学院工程热物理研究所 | Novel-process supercritical air energy storage system |
| CN105043147B (en) * | 2015-06-25 | 2017-01-25 | 中国科学院理化技术研究所 | Liquefied compressed air energy storage system with cold-storage liquid media |
| CN105546934B (en) * | 2016-03-09 | 2018-02-16 | 成都深冷液化设备股份有限公司 | Air liquefaction device and energy conversion, storage and utilization method thereof |
| CN206113511U (en) * | 2016-06-17 | 2017-04-19 | 全球能源互联网研究院 | Pressure boosting type cryogenic liquefying air energy storage system |
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