CN108699968A - Compressed air stores power generator - Google Patents
Compressed air stores power generator Download PDFInfo
- Publication number
- CN108699968A CN108699968A CN201780009392.XA CN201780009392A CN108699968A CN 108699968 A CN108699968 A CN 108699968A CN 201780009392 A CN201780009392 A CN 201780009392A CN 108699968 A CN108699968 A CN 108699968A
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- compressed air
- oil
- flow circuit
- air flow
- air
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- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 238000010248 power generation Methods 0.000 claims abstract description 29
- 238000009825 accumulation Methods 0.000 claims description 50
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 15
- 238000005338 heat storage Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 103
- 239000010687 lubricating oil Substances 0.000 description 32
- 230000005611 electricity Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 230000001172 regenerating effect Effects 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010730 cutting oil Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- -1 is inferior Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C1/00—Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid
- F02C1/04—Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid the working fluid being heated indirectly
- F02C1/05—Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid the working fluid being heated indirectly characterised by the type or source of heat, e.g. using nuclear or solar energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/14—Gas-turbine plants having means for storing energy, e.g. for meeting peak loads
- F02C6/16—Gas-turbine plants having means for storing energy, e.g. for meeting peak loads for storing compressed air
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
-
- 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
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- High Energy & Nuclear Physics (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Compressed air storage power generator (2) has motor (12), oil-cooled type screw compressor (14), accumulator tank (18), expanding machine (20) and generator (22).In addition, device (2) has air flow circuit (8b), oil component sensor (28), separating component (16b), the first switching mechanism (32b, 32c) and the control device (44) of power generation.Flow path (8b) has in the first air flow circuit (9a) and the second air flow circuit (9b) being arranged in parallel from tank (18) to expanding machine (20).Oil component in sensor (28) flow path (8b) is detected.Separating component (16b) isolates oil component from the compressed air in flow path (9b).Any one of the state that first switching mechanism (32b, 32c) switches to the state that compressed air flows in flow path (9a) and flowed in flow path (9b).Control device (44) makes the first switching mechanism (32b, 32c) act, oil component is isolated from compressed air using separating component (16b) when detecting the oil concentration of benchmark or more by sensor (28).In this way, providing while using oil-cooled type screw compressor (14) in view of Environmental compressed air storage power generator (2).
Description
Technical field
The present invention relates to compressed airs to store power generator.
Background technology
It is therefore exported sometimes dependent on meteorological condition using the power generation of the regenerative resources such as wind-power electricity generation, solar power generation
It changes and unstable.It is changed for such output, as the system for making output equalize, it is known to which compressed air is stored
(CAES:Compressed air energy storage) system.
Storing (CAES) power generator using the compressed air of the CAES system will in the off-peak hours of power equipment
Electric energy is accumulated as compressed air in accumulator tank, in high electric power needs the time, makes power generation using compressed air-driven expanding machine
Motor-driven work generates electric energy, output is made to equalize.In addition, in order to improve generating efficiency, it is known to recycle the heat of compression by heat storage medium
And in being housed in heat-accumulator tank etc., the compressed air before expansion is heated using the heat of compression after recycling system.As a result,
Prevent power when compression from increasing, heat release when making recycling power when expansion increase, while preventing accumulator tank from storing.
The technology using thermal energy storage system is disclosed as such CAES power generator, such as in patent document 1.
Citation
Patent document
Patent document 1:Japanese Unexamined Patent Application Publication 2013-509530 bulletins
Invention content
The subject that the invention solves
There are be referred to as oil cooling to what air was compressed in the state of being mixed into lubricating oil in air compressor
The compressor referred to as oil free type of the compressor of formula and type without using lubricating oil.Although not having in patent document 1
The record of type about compressor, but as the compressor for CAES system, from the side of the processing easness of compressed air
Set out the more compressor using oil free type in face.Oil-cooled type screw compressor or oil injection type expanding machine are used in CAES power generator
In the case of, the cost of device is low, but needs lubricating oil in the running, and therefore, air is mixed with oil.By using oil eliminator
And the separation of air and oil can be carried out, but can not be kept completely separate.Especially in the case where compressor is set as oil injection type, from
The compressed air of oil-cooled type screw compressor discharge becomes the state comprising oil component.Therefore, in long-time packet has been stored to accumulator tank
The case where compressed air of oil composition, is inferior, and oil is inadvertently accumulated, and position supply of the oil to outside expectation, and there are devices
The danger broken down.In addition, the oil component in accumulator tank flows to expanding machine in the state of being mixed into compressed air and to being
The external discharge of system, it is not preferred from this viewpoint is influenced caused by ambient enviroment.
Problem of the present invention is that provide it is a kind of while using oil-cooled type screw compressor in view of Environmental compression is empty
Gas-reservoir hides power generator.
Solution
The present invention provides a kind of compressed air storage power generator, wherein the compressed air storage power generator has:
Motor, by using electric drive obtained from renewable energy power generation;Oil-cooled type screw compressor is driven by the motor
It is dynamic;Pressure accumulation portion is accumulated by the compressed compressed air of the oil-cooled type screw compressor;Expanding machine, by being supplied from the pressure accumulation portion
The compressed air-driven given;Generator is driven by the expanding machine;The air flow circuit of power generation, extremely by the pressure accumulation portion
The expanding machine fluidly connects and compressed air is made to circulate, and with the first air flow circuit and the second air stream being arranged in parallel
Road;First oily test section, to oil contained in the compressed air in the air flow circuit in the pressure accumulation portion or the power generation at
Divide and is detected;Oil eliminator isolates oil component from the compressed air in second air flow circuit;First switching machine
Structure switches to compressed air in first air stream when supplying compressed air to the expanding machine from the pressure accumulation portion
The state flowed in road and any one of the state flowed in second air flow circuit;And control device, by
When described first oily test section detects the oil concentration of benchmark or more, so that first switching mechanism is acted, it is empty to switch to compression
The state that gas flows in second air flow circuit, and using the oil eliminator oil component is isolated from compressed air.
It is cut using first according to the structure in the case where detecting the oil component of benchmark or more by the first oily test section
Converting mechanism switches to the state that compressed air flows in the second air flow circuit, so as to by oil eliminator from compressed air
Oil component is isolated, therefore, it is possible to prevent leakage of the oil to exterior.Therefore, it is possible to provide using oil-cooled type screw compressor
And in view of Environmental CAES power generator while reducing the cost of device.In addition, not detected by the first oily test section
In the case of oil component more than to benchmark, switches to compressed air in the first air flow circuit using the first switching mechanism and flow
State, in the state of not via oil eliminator to expanding machine supply compressed air, therefore, it is possible to prevent oil eliminator
In the pressure loss.
Preferably, it is also equipped with:First heat exchanger, what is supplied from the oil-cooled type screw compressor to the pressure accumulation portion
Heat exchange is carried out between compressed air and thermophore;Heat storage unit is accumulated by the heat-carrying after the first heat exchanger heat exchange
Body;And second heat exchanger, compressed air from the pressure accumulation portion to the expanding machine that supplied from from the heat storage unit
Heat exchange is carried out between the thermophore of supply.
According to the structure, by the heat of compression generated from oil-cooled type screw compressor recycle and return to the air before expansion
It returns, generating efficiency can be improved.Specifically, the temperature for the compressed air stored in pressure accumulation portion is higher than the case where atmospheric temperature
Under, heat releases to air and generates energy loss.In this configuration, in order to prevent this situation, to pressure accumulation portion supply pressure
Recuperation of heat is carried out by first heat exchanger in advance before contracting air.The temperature of the compressed air in pressure accumulation portion is set to be reduced to greatly as a result,
Gas temperature degree prevents the heat release in pressure accumulation portion.The heat storage being recovered to by first heat exchanger is expanding in heat storage unit
It is preceding to be returned again to compressed air.Therefore, expansion efficiency is improved, generating efficiency is improved.
Preferably, the oil eliminator is arranged in second air flow circuit from the pressure accumulation portion to described second
Position between heat exchanger.
By being arranged oil eliminator in the upstream of second heat exchanger in the second air flow circuit, can to second heat
The air separation of exchanger supply is fuel-displaced, therefore, it is possible to prevent the pollution of the second heat exchanger caused by oil.
Preferably, it is also equipped with:Second test section is arranged until from the second heat exchanger to the expanding machine
The power generation air flow circuit in;Recycling air flow circuit is from from the second heat exchanger to the expanding machine
It is branched out in the air flow circuit of the power generation only;Collecting tank is fluidly connected with the third air flow circuit;And the
Two switching mechanisms switch to state that compressed air flows in the air flow circuit of the power generation and in the third air
Any one of state flowed in flow path, the control device is in the load for detecting benchmark or more by the described second oily test section
When hot body, second switching mechanism is made to act, switch to the state flowed in the third air flow circuit, and to the receipts
Collect tank supply compressed air and thermophore.
Even if in the case where that can not be sufficiently separated fuel-displaced from compressed air by oil eliminator, can also be examined by the second oil
Detect oil component in survey portion.In this case, recycling air flow circuit is switched to by using the second switching mechanism, can will will include
The compressed air of oil component is recovered to collecting tank, can prevent the leakage of thermophore.
Preferably, the level detection portion being detected to the liquid level in the pressure accumulation portion, the pressure accumulation are also equipped with
Portion is fluidly connected with the collecting tank via third switching mechanism, and the control device is examined by the level detection portion
When measuring the value of benchmark or more, the third switching mechanism is made to act, and the pressure accumulation portion is made to circulate with the collecting tank.
The case where oil in pressure accumulation portion is recycled in the case of being stored with oil in pressure accumulation portion or when not generating electricity
Under, switch third switching mechanism, so that pressure accumulation portion is circulated with collecting tank, so as to which the oil being stored in pressure accumulation portion is recovered to receipts
Collect tank.
Invention effect
According to the present invention, in the case where detecting the oil component of benchmark or more by the first oily test section, the can be utilized
One switching mechanism switches to the state that compressed air flows in the second air flow circuit, is detached from compressed air by oil eliminator
Go out oil component, therefore, it is possible to prevent oil from being leaked out to exterior.It is reduced using oil-cooled type screw compressor therefore, it is possible to provide
In view of Environmental CAES power generator while the cost of device.
Description of the drawings
Fig. 1 is the sketch structure figure of the compressed air storage power generator of the first embodiment of the present invention.
Fig. 2 is the flow chart of the control method for the CAES power generator for showing Fig. 1.
Fig. 3 is the sketch structure figure of the compressed air storage power generator of second embodiment of the present invention.
Specific implementation mode
Hereinafter, the embodiments of the present invention will be described with reference to the drawings.
(first embodiment)
Compressed air stores (CAES:Compressedairenergystorage) power generator 2 makes to utilize renewable energy
The output of the power generator 4 in source change equalization and to 6 power supply of electric system, and for giving the electricity in electric system 6
The matched electric power of variation that power needs.
Referring to Fig.1, the structure of CAES power generator 2 is illustrated.The CAES power generator 2 of present embodiment has sky
Air-flow road (with reference to dotted line) 8a, 8b, 9a~9f and thermophore flow path (with reference to solid line) 10a~10c.
First, air flow circuit (with reference to dotted line) 8a, 8b, 9a~9f is illustrated.
In air flow circuit 8a, 8b, 9a~9f, CAES power generator 2 has motor (motor) 12, oil-cooled type screw compressor
(being simply referred to as compressor sometimes later) 14, separating component (oil eliminator) 16a~16c, accumulator tank (pressure accumulation portion) 18, expanding machine
20, generator 22, first heat exchanger 24 and second heat exchanger 26.
It is electrically connected with motor 12 (with reference to single dotted broken line) using the power generator 4 of regenerative resource, is generated electricity by power generator 4
Electric power to motor 12 supply.After, the electric power supplied from power generator 4 to motor 12 is referred to as input electric power.It is defeated using this
Enter electric power to drive motor 12.Motor 12 and compressor 14 are mechanically connected, are driven to compressor 14.
Compressor 14 is the compressor of oil injection type, is able to cooled and lubricated by being supplied to lubricating oil.Compressor
14 by motor 12 when being driven, and is sucked air from air entry 14a, is compressed in inside, empty from outlet 14b discharge compressions
Gas.The outlet 14b of compressor 14 is fluidly connected by the air flow circuit 8a of electric power storage with accumulator tank 18, the compression after discharge
Air is by force feed to accumulator tank 18.It is provided with valve 32a in the air flow circuit 8a of electric power storage, passes through the opening and closing of valve 32a, Neng Gouyun
Perhaps or supply from from compressor 14 to the compressed air of accumulator tank 18 is cut off.As long as it should be noted that the type of compressor 14
It is oil injection type, is not particularly limited, such as can also be spiral, vortex, turbine type and reciprocating etc..
When using oil-cooled type screw compressor 14, the compressed air of oil component is included from outlet 14b discharges.In order to from discharge
Compressed air afterwards isolates oil component, and separating component 16a is folded in the air flow circuit 8a of electric power storage.
Here, in the present embodiment, thermophore for cooling and heating for compressed air and to compressor
14 and the lubricating oil that is lubricated of expanding machine 20, use fluid of the same race.As fluid of the same race, such as oil can be used.At this
In embodiment, there is the case where record for using this two side of thermophore and lubricating oil later, but the two is not different.
Separating component 16a and air flow circuit 8a and thermophore flow path 10a this two side connect.In separating component 16a, from
The compressed air separation flowed in the air flow circuit 8a of electric power storage is fuel-displaced, and oil after separation is as thermophore to aftermentioned heat-carrying
The 10a supplies of body flow path.
In addition, making compressed air become high temperature due to the heat of compression generated when compression.In order to the compression as high temperature
Air is cooled down, and first heat exchanger 24 is folded in the air flow circuit 8a that electric power storage is used as cooler.It is handed in the first heat
In parallel operation 24, compressed air is cooled down by the heat exchange between thermophore and compressed air.
Accumulator tank 18 is accumulated compressed air and can be accumulated as the energy.It is provided with to internal compression in accumulator tank 18
The oil component sensor (the first oily test section) 28 that oil component (oil concentration) contained by air is detected.In addition, in accumulator tank
The liquid level sensor (level detection portion) 30 being detected to internal liquid level is provided in 18.Although as described above,
Compressed air is supplied to accumulator tank 18 in the state of isolating oil component from separating component 16a, but exists and is based on separating component 16a
Oil component the incomplete situation of separation.The case where not detached accordingly, there exist the oil component of a part and flowing into accumulator tank 18.
Therefore, it is detected using the oil component in 28,30 pairs of accumulator tanks 18 of these sensors.The air that accumulator tank 18 passes through power generation
Flow path 8b is fluidly connected with expanding machine 20, is supplied from the compressed air that accumulator tank 18 is sent out to expanding machine 20.It needs to illustrate
It is that oil component sensor 28 can also be arranged in the air flow circuit 8b of power generation.
The air flow circuit 8b of power generation has the first air flow circuit 9a and second air flow circuit 9b, Yi Ji being arranged in parallel
Air flow circuit 9c behind one air flow circuit 9a and the interflow the second air flow circuit 9b.First air flow circuit 9a is extended to from accumulator tank 18
Junction of two streams J.First air flow circuit 9a is provided with valve 32b.Second air flow circuit 9b extends to junction of two streams J from accumulator tank 18.
Second air flow circuit 9b is provided with valve 32c and separating component 16b.Valve 32b, 32c of present embodiment constitute the first of the present invention
Switching mechanism still flows compressed air in the second air flow circuit 9b in the first air flow circuit 9a flowings and switches over.Afterwards
The switching control of the first switching mechanism is stated, but when usual, compressed air flows in the first air flow circuit 9a.Therefore, logical
Chang Shi, valve 32b are opened, and valve 32c is closed.Air flow circuit 9c extends to expanding machine 20 from junction of two streams J.It is provided in air flow circuit 9c
Second heat exchanger 26, oil component sensor (the second oily test section) 34, branch point D and valve 32d.
The important document of air flow circuit 8b set on power generation is illustrated successively.Valve 32b is allowed or is switched by opening and closing
The flowing of first air flow circuit 9a.At junction of two streams J, the first air flow circuit 9a and the second air flow circuit 9b collaborate.In the second heat
In exchanger 26, the compressed air supplied to expanding machine 20 is heated.Oil component sensor 34 is as described later to can not be by detaching
Component 16b is sufficiently separated and the oil component included in the compressed air in the air flow circuit 8b of power generation is detected.
At branch point D, air flow circuit 8b (air flow circuit 9c) branches of third air flow circuit 9d from power generation.In the downstream of branch point D,
It is respectively arranged with valve 32d, 32e in the air flow circuit 8b (air flow circuit 9c) and third air flow circuit 9d of power generation.This implementation
Valve 32d, 32e of mode constitutes the second switching mechanism of the present invention, to compressed air power generation air flow circuit 8b (air streams
Road 9c) in flowing or flow and switch in third air flow circuit 9d.The switching control of aftermentioned second switching mechanism, but
When usual, compressed air does not flow in third air flow circuit 9d.Therefore, when usual, valve 32d is opened, and valve 32e is closed.
Third air flow circuit 9d is fluidly connected with collecting tank 36.In addition, collecting tank 36 by air flow circuit 9e with storage
Pressure tank 18 is fluidly directly connected to, and also can directly feed oil from accumulator tank 18.Therefore, collecting tank 36 storage comprising thermophore with
And the compressed air of oil.In the present embodiment, as described above, thermophore uses fluid of the same race with oil, therefore, thermophore and oil
Indistinction.In addition, being provided with valve 32f in air flow circuit 9e, by the opening and closing of valve 32f, it can allow for or cut off from accumulator tank 18
Supply to the oil of collecting tank 36.The valve 32f of present embodiment constitutes the third switching mechanism of the present invention.In addition, air flow circuit
9f extends from collecting tank 36, and air flow circuit 9f is provided with separating component 16c and valve 32g.Therefore, by separating component 16c points
Oil component is separated out, can if necessary be deflated by opening valve 32g.
In addition, allowing or cutting off the flowing of the second air flow circuit 9b by the opening and closing of valve 32c.Separating component 16b from
The compressed air flowed in second air flow circuit 9b isolates oil component.Second air flow circuit 9b is empty with first at junction of two streams J
Air-flow road 9a collaborates.
In this way, compressed air is including comprising the first air flow circuit 9a, the second air flow circuit 9b and air flow circuit 9c
It flows in the air flow circuit 8b of power generation, is supplied to expanding machine 20.
Expanding machine 20 is the expanding machine of oil injection type, cools off and lubricates by being supplied to lubricating oil.Expanding machine 20
It is mechanically connected with generator 22, the expanding machine 20 of compressed air is supplied in the compressed air supplied from supply mouth 20a
The lower work of effect, drives generator 22.Air after expansion is discharged from exhaust outlet 20b.The type of expanding machine 20 is for example
Can be spiral, vortex, turbine type and reciprocating etc..Furtherly, expanding machine 20 is not limited to oil injection type, or
Oil free type.
Generator 22 is electrically connected (with reference to single dotted broken line) with electric system 6, from the electric power that generator 22 generates electricity to power train
6 supply of system.
Then, thermophore flow path 10a~10c is illustrated (with reference to solid line).
It is disposed with first heat exchanger 24, high-temperature heat accumulation tank (heat storage unit) 38, in thermophore flow path 10a~10c
Two heat exchangers 26 and low-temperature heat accumulating tank 40.Thermophore circulates between them.
In first heat exchanger 24, compressed air in the air flow circuit 8a of electric power storage with from low-temperature heat accumulating tank 40 to
Heat exchange is carried out between the thermophore in thermophore flow path 10a that high-temperature heat accumulation tank 38 extends.Specifically, in the sky of electric power storage
Become high temperature under the action of the heat of compression that the compressed air flowed in the 8a of air-flow road is generated when compressor 14 is compressed, passes through
Heat exchange cools down compressed air.That is, the temperature of compressed air reduces in first heat exchanger 24, in the temperature of thermophore
It rises.First heat exchanger 24 is fluidly connected by thermophore flow path 10a with high-temperature heat accumulation tank 38, the heat-carrying after temperature rise
Body is supplied to high-temperature heat accumulation tank 38 and is accumulated.
The thermophore of high temperature of the high-temperature heat accumulation tank 38 to being supplied from first heat exchanger 24 is kept the temperature and is accumulated.Therefore,
It is preferred that high-temperature heat accumulation tank 38 is heat-insulated.High-temperature heat accumulation tank 38 by thermophore flow path 10b with second heat exchanger 26 fluidly
It connects, the thermophore accumulated in high-temperature heat accumulation tank 38 is supplied to second heat exchanger 26.
In second heat exchanger 26, compressed air in the air flow circuit 8b (air flow circuit 9c) of power generation with from height
Heat exchange is carried out between the thermophore in thermophore flow path 10b that intermediate temperature regenerator tank 38 extends to low-temperature heat accumulating tank 40.Specifically,
Carry the temperature rise of compressed air before the expansion of expanding machine 20 using the thermophore of the high temperature in high-temperature heat accumulation tank 38
Highly expanded efficiency.That is, in second heat exchanger 26, the temperature of the temperature rise of compressed air, thermophore reduces.Second heat is handed over
Parallel operation 26 is fluidly connected by thermophore flow path 10b with low-temperature heat accumulating tank 40, temperature reduce after thermophore to Low Temperature Storage
Hot tank 40 is supplied and is accumulated.
The thermophore of low temperature of the low-temperature heat accumulating tank 40 to being supplied from second heat exchanger 26 is accumulated.Low-temperature heat accumulating tank 40
It is fluidly connected respectively with first heat exchanger 24 or compressor 14 by thermophore flow path 10b, 10c, low-temperature heat accumulating tank 40
The thermophore of middle accumulation is supplied respectively to by thermophore flow path 10b, 10c to first heat exchanger 24 or compressor 14.
In the present embodiment, as described above, using fluid of the same race as thermophore and lubricating oil, therefore, supply
Thermophore to compressor 14 also is used to lubricate and cool down as lubricating oil.Compressor 14 is by thermophore flow path 10c
It is fluidly connected with high-temperature heat accumulation tank 38, the thermophore after the temperature rise of lubricating oil is used as in compressor 14 and passes through thermophore
Flow path 10c is supplied to high-temperature heat accumulation tank 38.
In this way, in thermophore flow path 10a~10c, heat transfer medium circuit.Cycling through for thermophore is located in thermophore stream
The pump 42 of road 10b carries out.In the present embodiment, pump 42 is arranged in the downstream of low-temperature heat accumulating tank 40, but its position is not special
It limits.
According to the structure in thermophore flow path 10a~10c, the heat of compression generated by compressor 14 is recycled and returned
Air before to expansion, thus, it is possible to improve generating efficiency.Specifically, the temperature for the compressed air stored in accumulator tank 18
In the case of atmospheric temperature, heat discharges into air and generates energy loss.In this configuration, this feelings in order to prevent
Condition carries out recuperation of heat by first heat exchanger 24 in advance before supplying compressed air to accumulator tank 18.Make accumulator tank as a result,
The temperature of 18 compressed air is reduced to atmospheric temperature degree, prevents the heat release in accumulator tank 18.By first heat exchanger 24
The heat storage being recovered to is returned to compressed air again before inflation in high-temperature heat accumulation tank 38.Therefore, expansion efficiency improves,
Generating efficiency is set to improve.
In addition, CAES power generator 2 has control device 44.Control device 44 is by the hardware comprising sequencer etc. and installation
It is constructed in the software of hardware.Control device 44 is to input electric power and the electric power desirable value from electric system 6 monitors.Control
Device 44, which is based on these monitoring values, makes CAES power generator 2 operate, and input electric power is made to equalize and supply electricity to electric system 6
Power.In addition, the control device 44 of present embodiment especially receives oil component sensor 28, liquid level sensor 30 and oil component
The detected value of sensor 34, as described later to first switching mechanism 32b, 32c, second switching mechanism 32d, 32e and third
Switching mechanism 32f is controlled.
With reference to Fig. 2, the control method of the CAES power generator 2 of present embodiment is illustrated.
Control device 44 judges to be determined (referring to Fig.1) by oil component sensor 28 when starting control (step S2-1)
Accumulator tank 18 in oil concentration O1 whether be less than a reference value Oth (step S2-2).In oil concentration O1 not less than a reference value Oth's
In the case of, judge whether the liquid level L1 in the accumulator tank 18 determined by liquid level sensor 30 is less than a reference value Lth (step S2-
3)。
In the case where liquid level L1 is not less than a reference value Lth, switch third switching mechanism 32f, that is, valve 32f is opened, from storage
Press tank 18 to 36 oil recovery (step S2-4) of collecting tank.After oil recovery, it is back to the processing (step S2-5) of step S2-3.
In step S2-3, in the case where liquid level L1 is less than a reference value Lth, switch first switching mechanism 32b, 32c,
That is, closing valve 32b, valve 32c is opened.The compressed air in accumulator tank 18 flows in the second air flow circuit 9b as a result, by detaching
Component 16b isolates oil component (step S2-6).
In the processing of step S2-2 oil component O1 be less than a reference value Oth1 in the case of and step S2-6 processing
Afterwards, judge the oil concentration in the compressed air flowed in the air flow circuit 8b of power generation determined by oil component sensor 34
Whether O2 is less than benchmark Oth2 (step S2-7).It should be noted that in the case where oil component O1 is less than a reference value Oth1, by
In there is no misty oil components, therefore fluid is also not present, does not accumulate fluid in accumulator tank 18.It is therefore not necessary to such as step
The processing of S2-3 is detected using liquid level sensor 30 like that.
In the case that oil concentration O2 in compressed air is not less than benchmark Oth2, switch second switching mechanism 32d, 32e,
That is, closing valve 32d, valve 32e is opened.The compressed air comprising thermophore flowed out as a result, from second heat exchanger 26 is in third
Flowing in air flow circuit 9d recycles thermophore (step S2-8) to collecting tank 36.
In the case that oil concentration O2 in compressed air is less than benchmark Oth2, compressed air is supplied to expanding machine 20,
Expanding machine 20 is driven, to drive generator 22 (step S2-9).After completing these processing, finishing control (step
Rapid S2-10).
According to the structure first is utilized in the case where detecting the oil component of benchmark or more by oil component sensor 28
Switching mechanism 32b, 32c switch to the state that compressed air flows in the second air flow circuit 9b, so as to pass through separation unit
Part 16b isolates oil component from compressed air, therefore, it is possible to prevent oil from being leaked out to exterior.It will pressed therefore, it is possible to provide
In view of Environmental CAES power generator 2 while contracting machine 14 is set as oil injection type and reduces the cost of device.In addition, by oil
In the case that the oil component of benchmark or more is not detected in component sensor 28, pressure is switched to using first switching mechanism 32b, 32c
The state that contracting air flows in the first air flow circuit 9a supplies in the state of not via separating component 16b to expanding machine 20
Compressed air, therefore, it is possible to prevent the pressure loss in separating component 16b.
By the way that separating component 16b is arranged in the upstream of second heat exchanger 26, Neng Goucong in the second air flow circuit 9b
The air separation supplied to second heat exchanger 26 is fuel-displaced, therefore, it is possible to prevent the dirt of the second heat exchanger 26 caused by oil
Dye.
Even if in the case where that can not be sufficiently separated fuel-displaced from the compressed air before expansion by separating component 16b, also can
Enough oil component is detected using oil component sensor 34.In case that it was detected, second switching mechanism 32d, 32e is utilized
Third air flow circuit 9d is switched to, thereby, it is possible to include that the compressed air of oil component is recovered to collecting tank 36, oil can be prevented
The leakage of ingredient.
In the case of oil being stored in accumulator tank 18, or the oil in accumulator tank 18 is recycled when not generating electricity
In the case of, switch third switching mechanism 32f, accumulator tank 18 is made to circulate with collecting tank 36, the oil that can will be stored in accumulator tank 18
It is recovered to collecting tank 36.
(second embodiment)
In the CAES power generator 2 of second embodiment shown in Fig. 3, lubricating oil is different from the type of thermophore, removes
This point, it is with the first embodiment of Fig. 1 substantially the same.Therefore, it is similarly partly omitted for structure shown in FIG. 1
Explanation.
The CAES power generator 2 of present embodiment has air flow circuit 8a, 8b, 9a~9f (with reference to dotted line), thermophore stream
Road 11a, 11b (with reference to solid line) and lubricating oil flow path 46a, 46b (with reference to double dot dash line).
First, air flow circuit (with reference to dotted line) 8a, 8b, 9a~9f is illustrated.
The CAES power generator 2 of present embodiment the first air flow circuit 9a setting there are two second heat exchanger 27a,
27b.Therefore, in two second heat exchangers 27a, 27b, the compressed air in the first air flow circuit 9a is added two stages
Heat.
Then, to thermophore flow path 11a, 11b (with reference to solid line) and lubricating oil flow path 46a, 46b (with reference to double dot dash line)
It illustrates together.
It is different from first embodiment in the structure of the CAES power generator 2 of present embodiment, lubricating oil and thermophore
Type it is different, therefore, thermophore flow path 11a, 11b and lubricating oil flow path 46a, 46b are independently set.In other words, heat-carrying
Body flow path 11a, 11b and lubricating oil flow path 46a, 46b are non-intersecting, and lubricating oil will not be mixed with thermophore.
The CAES power generator 2 of present embodiment has two high-temperature heat accumulation tank (heat storage unit) 39a, 39b and two low
Intermediate temperature regenerator tank 41a, 41b.Specifically, in two high-temperature heat accumulation tanks 39a, 39b, one be the lubricating oil for storing high temperature lubrication
Oily high-temperature tank 39a, the other is the thermophore high-temperature tank 39b of the thermophore of storage high temperature.Two low-temperature heat accumulating tanks 41a, 41b
In, one be store low temperature lubricating oil lubricating oil cryogenic tank 41a, the other is storage low temperature thermophore thermophore it is low
Warm tank 41b.
In thermophore flow path 11a, 11b, first heat exchanger 24, thermophore high-temperature tank 39a, second heat exchanger 27b
And thermophore cryogenic tank 41a is fluidly connected, flowing between them has thermophore.The type of thermophore is not particularly limited,
The thermophore of ethylene glycol system can be used for example.
In lubricating oil flow path 46a, 46b, compressor 14, lubricating oil high-temp tank 39b, second heat exchanger 27a and profit
Lubricating oil cryogenic tank 41b is fluidly connected, and flowing between them has lubricating oil.The type of lubricating oil is not particularly limited, such as can
To use mineral oil.
In the air flow circuit 8b of power generation, about the configuration of two second heat exchangers 27a, 27b, the of lubricating oil
Two heat exchangers 27a settings are arranged in upstream, the second heat exchanger 27b of thermophore in downstream.In second heat exchanger
Lubricating oil and thermophore are cooled down in 27a, 27b, but lubricating oil impacts the function of compressor 14, it is therefore preferable that
Preferential cutting oil.Therefore, by the second heat exchanger 27a configurations of lubricating oil in upstream, by the second heat of thermophore
Exchanger 27b configurations are in downstream.
In the present embodiment, to thermophore flow path 11a, 11b and lubricating oil flow path 46a, 46b be respectively arranged with pump 43a,
43b.Therefore, thermophore and lubricating oil recycle under the action of pumping 43a, 43b in respective flow path.
The control method of the control method and first embodiment shown in Fig. 2 of the CAES power generator 2 of present embodiment
It is identical.
In each embodiment recorded at this, the power generation object based on regenerative resource for example can be by following all energy
Source is as object, and the using energy source is by wind-force, solar energy, solar heat, wave power or power from ocean tides, flowing water or tide and underground heat etc.
The energy of natural force steadily (or repeatedly) supplement.
Reference sign:
2 compressed airs store power generator (CAES power generator);
4 utilize the power generator of regenerative resource;
6 electric system;
8a, 8b, 9c, 9e, 9f air flow circuit;
8c thirds air flow circuit (air flow circuit);
The first air flow circuits of 9a;
The second air flow circuits of 9b;
9d third air flow circuits;
10a, 10b, 10c, 11a, 11b thermophore flow path;
12 motors (motor);
14 oil-cooled type screw compressors (compressor);
14a air entries;
14b outlets;
16a, 16b, 16c separating component (oil eliminator);
18 accumulator tanks (pressure accumulation portion);
20 expanding machines;
20a air supply openings;
20b exhaust outlets;
22 generators;
24 first heat exchangers;
26,27a, 27b second heat exchanger;
28 oil component sensors (the first oily test section);
30 liquid level sensors;
32a, 32g valve;
32b, 32c valve (the first switching mechanism);
32d, 32e valve (the second switching mechanism);
32f valves (third switching mechanism);
34 oil component sensors (the second oily test section);
36 collecting tanks;
38 high-temperature heat accumulation tanks (heat storage unit);
39a heatings medium for high temperature tank (high-temperature heat accumulation tank) (heat storage unit);
39b high temperature lubricatings oil tank (high-temperature heat accumulation tank) (heat storage unit);
40 low-temperature heat accumulating tanks;
41a low temperature thermophores tank (low temperature thermophore tank);
41b low-temperature lubrications oil tank (low temperature thermophore tank);
42,43a, 43b are pumped;
44 control devices;
46a, 46b lubricating oil flow path.
Claims (5)
1. a kind of compressed air stores power generator, wherein
The compressed air storage power generator has:
Motor, by using electric drive obtained from renewable energy power generation;
Oil-cooled type screw compressor, by the motor drive;
Pressure accumulation portion is accumulated by the compressed compressed air of the oil-cooled type screw compressor;
Expanding machine, by the compressed air-driven supplied from the pressure accumulation portion;
Generator is driven by the expanding machine;
The air flow circuit of power generation will fluidly connect to the expanding machine from the pressure accumulation portion and compressed air is made to circulate,
And with the first air flow circuit and the second air flow circuit being arranged in parallel;
First oily test section, to oil contained in the compressed air in the air flow circuit in the pressure accumulation portion or the power generation at
Divide and is detected;
Oil eliminator isolates oil component from the compressed air in second air flow circuit;
First switching mechanism switches to compressed air and exists when supplying compressed air to the expanding machine from the pressure accumulation portion
The state flowed in first air flow circuit and any one of the state flowed in second air flow circuit;And
Control device makes first switching machine when detecting the oil concentration of benchmark or more by the described first oily test section
Structure acts, and switches to the state that compressed air flows in second air flow circuit, and utilize the oil eliminator from compression
Air isolates oil component.
2. compressed air according to claim 1 stores power generator, wherein
The compressed air storage power generator is also equipped with:
First heat exchanger, between the compressed air and thermophore supplied from the oil-cooled type screw compressor to the pressure accumulation portion
Carry out heat exchange;
Heat storage unit is accumulated by the thermophore after the first heat exchanger heat exchange;And
Second heat exchanger is supplied in the compressed air supplied from the pressure accumulation portion to the expanding machine with from the heat storage unit
Thermophore between carry out heat exchange.
3. compressed air according to claim 2 stores power generator, wherein
The oil eliminator is arranged in second air flow circuit from the pressure accumulation portion between the second heat exchanger
Position.
4. compressed air according to claim 2 or 3 stores power generator, wherein
The compressed air storage power generator is also equipped with:
Second oily test section, is arranged the air in the power generation until from the second heat exchanger to the expanding machine
In flow path;
Third air flow circuit, the air flow circuit of the power generation until from the second heat exchanger to the expanding machine
In branch out;
Collecting tank is fluidly connected with the third air flow circuit;And
Second switching mechanism switches to state that compressed air flows in the air flow circuit of the power generation and described
Any one of the state flowed in three air flow circuits,
The control device makes second switching machine when detecting the thermophore of benchmark or more by the described second oily test section
Structure acts, and switches to the state flowed in the third air flow circuit, and supply compressed air and load to the collecting tank
Hot body.
5. compressed air according to claim 4 stores power generator, wherein
The compressed air storage power generator is also equipped with the level detection being detected to the liquid level in the pressure accumulation portion
Portion,
The pressure accumulation portion is fluidly connected with the collecting tank via third switching mechanism,
The control device keeps the third switching mechanism dynamic when detecting the value of benchmark or more by the level detection portion
Make, and the pressure accumulation portion is made to circulate with the collecting tank.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016022120A JP6577384B2 (en) | 2016-02-08 | 2016-02-08 | Compressed air storage generator |
| JP2016-022120 | 2016-02-08 | ||
| PCT/JP2017/001756 WO2017138320A1 (en) | 2016-02-08 | 2017-01-19 | Compressed air energy storage generation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108699968A true CN108699968A (en) | 2018-10-23 |
| CN108699968B CN108699968B (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780009392.XA Active CN108699968B (en) | 2016-02-08 | 2017-01-19 | Compressed air storage power generation device |
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| Country | Link |
|---|---|
| JP (1) | JP6577384B2 (en) |
| CN (1) | CN108699968B (en) |
| WO (1) | WO2017138320A1 (en) |
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| PE20211256A1 (en) * | 2018-12-28 | 2021-07-14 | Univ Tecnica Federico Santa Maria Utfsm | SYSTEM FOR THE GENERATION OF ELECTRICAL ENERGY, INCLUDING: AT LEAST ONE COMPRESSOR; AT LEAST TWO HIGH PRESSURE VESSELS; AT LEAST TWO SOLAR TANKS; AT LEAST ONE TURBINE, TO GENERATE ELECTRIC POWER; A SET OF VALVES; AT LEAST ONE SOURCE OF HEAT; AND AT LEAST TWO HEAT EXCHANGERS; AND METHOD ASSOCIATED |
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| JPH04103887A (en) * | 1990-08-22 | 1992-04-06 | Hitachi Ltd | Oil tank in oil-cooling type compressor |
| US20010004830A1 (en) * | 1996-12-24 | 2001-06-28 | Hitachi, Ltd. | Cold heat-reused air liquefaction/vaporization and storage gas turbine electric power system |
| US20040148922A1 (en) * | 2003-02-05 | 2004-08-05 | Pinkerton Joseph F. | Thermal and compressed air storage system |
| US20050271537A1 (en) * | 2004-06-03 | 2005-12-08 | Firnhaber Mark A | Cavitation noise reduction system for a rotary screw vacuum pump |
| JP2013036397A (en) * | 2011-08-09 | 2013-02-21 | Hitachi Industrial Equipment Systems Co Ltd | Refueling type compressor |
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| JPH10238366A (en) * | 1996-12-24 | 1998-09-08 | Hitachi Ltd | Energy storage type gas turbine power generation system |
| WO2005119066A2 (en) * | 2004-06-04 | 2005-12-15 | Entek Manufacturing Inc. | Gear for use in a gear pump |
| CN108952862B (en) * | 2018-07-25 | 2019-09-20 | 清华大学 | Back-heating type compressed-air energy-storage system and its application method |
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- 2017-01-19 WO PCT/JP2017/001756 patent/WO2017138320A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04103887A (en) * | 1990-08-22 | 1992-04-06 | Hitachi Ltd | Oil tank in oil-cooling type compressor |
| US20010004830A1 (en) * | 1996-12-24 | 2001-06-28 | Hitachi, Ltd. | Cold heat-reused air liquefaction/vaporization and storage gas turbine electric power system |
| US20040148922A1 (en) * | 2003-02-05 | 2004-08-05 | Pinkerton Joseph F. | Thermal and compressed air storage system |
| US20050271537A1 (en) * | 2004-06-03 | 2005-12-08 | Firnhaber Mark A | Cavitation noise reduction system for a rotary screw vacuum pump |
| JP2013036397A (en) * | 2011-08-09 | 2013-02-21 | Hitachi Industrial Equipment Systems Co Ltd | Refueling type compressor |
| CN102953823A (en) * | 2011-08-16 | 2013-03-06 | 阿尔斯通技术有限公司 | Adiabatic compressed air energy storage system and corresponding method |
| CN105134605A (en) * | 2014-05-28 | 2015-12-09 | 英格索尔-兰德公司 | Compressor system and oil separation system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017138320A1 (en) | 2017-08-17 |
| JP2017141695A (en) | 2017-08-17 |
| CN108699968B (en) | 2020-06-19 |
| JP6577384B2 (en) | 2019-09-18 |
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