CN106499612A - Compressed air double-energy storage system without external heat source - Google Patents
Compressed air double-energy storage system without external heat source Download PDFInfo
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- CN106499612A CN106499612A CN201611093124.4A CN201611093124A CN106499612A CN 106499612 A CN106499612 A CN 106499612A CN 201611093124 A CN201611093124 A CN 201611093124A CN 106499612 A CN106499612 A CN 106499612A
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- aqueous vapor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of compressed air double-energy storage system without external heat source, including compressor bank, expansion unit, water turbine set, water pump assembly, the encompassing cabin of aqueous vapor, gas storage ore deposit hole, heat exchanger；During energy storage, valley electricity drives compressor to compress air to high pressure conditions and be stored in ore deposit hole, while heat regenerator reclaims the heat of compression；When releasing energy, the water in the encompassing cabin of high pressure air drives aqueous vapor enters the hydraulic turbine and generates electricity, and after water is drained, cabin inner high voltage air is preheated to enter back into expansion unit acting electrical power generators；Treat that cabin inner air pressure is down to atmospheric pressure, water pump assembly again to water-filling in cabin, meanwhile, the encompassing cabin of another aqueous vapor is started working, and so energy is released in circulation.The present invention carries out electric energy release using the encompassing cabin of double aqueous vapors, saves nacelle material and cycling use of water；Without external heat source in cyclic process, fuel and the discharge of nonstaining property gas is saved, the environment friendly of system is improve；Water turbine set is generated electricity and is used in combination with expansion unit generation, energy utilization efficiency is high.
Description
Technical field
The present invention relates to electric energy physical store technical field, more particularly to a kind of compressed air double-energy storage without external heat source
System.
Background technology
For a long time, energy resource structure of the China based on Fossil fuel has caused environmental pollution, energy scarcity etc. many urgently
Problem to be solved.Therefore, the renewable and clean energy resource such as development wind energy, solar energy is imperative.By the end of the year 2015, China tires out
Wind turbines 92981 installed by meter, add up installed capacity 145362MW, increase by 26.8% on a year-on-year basis, occupy first place in the world[1,2].And
The renewable energy power generations such as wind energy are also faced with huge challenge while leading the energy to make the transition, its undulatory property, intermittent and
Can not Accurate Prediction etc. threat is caused to the safe and stable operation of electrical network, become restriction renewable energy power generation industry and send out
The main cause of exhibition.
The energy storage technology for arising at the historic moment provides effective technical support for renewable energy power generation industry.At present, draw water
Accumulation of energy and compressed-air energy storage because the advantages of its technology is more ripe, benefit is relatively significant in extensive technical field of energy storage
Obtain extensive concern[3].Water is evacuated to elevated reservoir from low level reservoir using regenerative resource institute electricity by water-storage technology,
The gravitional force for converting electrical energy into water is stored in elevated reservoir, and machine discharges the water in elevated reservoir again in due course, so as to
The hydraulic turbine is driven to generate electricity.Water-storage is most popular energy storage technology at present, with cycle efficieny high, capacity is big, operation
Mode flexibly waits remarkable advantage, but its addressing is subject to the particular restriction of landform and hydrologic condition.Compressed air energy storage technology is then
Using electric energy compressed air, by pressure-air be sealed in abandoned mine, the seabed air accumulator of sedimentation, cavern, expired Oil/gas Well or
In newly-built gas storage well, in network load peak period, release pressure-air enters gas-turbine combustion chamber burning, drives turbine power generation.
The compressed-air energy storage advantage such as have few initial cost, energy storage cycle length, capacity larger, but its geologic structure is also had special will
Ask, energy storage is converted to power process needs combustion of fossil fuels, have the disposals of pollutants such as carbon dioxide and nitrogen oxides, energy-storage system
Inefficient.Therefore, in the urgent need to developing new and effective large-scale energy storage system.
In many novel energy-storing systems, Wang Huanran[4]And Y.M.Kim[5]The water pumping compressed air energy-storage of proposition
(PHCA) advantage of water-storage and compressed-air energy storage has been had both, while overcome both shortcomings again, its essence is to lead to
The pressure change of the hollow gas of over-pressed force container, changes enclosed waters surface pressure, equivalent to setting up elevated reservoir, and its with low
Virtual dam is formed between the reservoir of position, but the variable working condition problem in the system can not be ignored.Thereafter, the head such as Wang Huanran and Yao Er people
The secondary proposition encompassing cabin electric energy storing system of water-gas, and for the system generate electricity and thermal energy storage process in variable working condition characteristic,
Propose a kind of high pressure tank and realize that the water-gas of constant pressure is encompassing cabin electric energy storing system (CN201410312066.4).To the greatest extent
Introducing high pressure tank in the energy-storage system is managed, the variable working condition in PHCA systems is solved the problems, such as, but when energy storage is huge,
The volume in required high-pressure gas container and the encompassing cabin of high-pressure water gas is also very big, and pond volume supporting with which is also very big, so as to
The working media water yield for generating electricity also should not be underestimated, and necessarily cause the cost of the energy-storage system to sharply increase, and cost of electricity-generating is big
Width is improved, or even the engineer applied that can hinder the technology.List of references：
[1] Chinese regenerative resource association wind energy Professional Committee .2015 Wind Power In Chinas installed capacity statistics [J]. wind
Can, 2016 (2):48-63.
[2] Global Wind-energy council .2015 whole world installed capacity of wind-driven power statistics [J]. wind energy industry, 2016:51-56.
[3]HS D B,Grond L,Moll H,etal.The application of power-to-gas,pumped
hydro storage and compressed air energy storage in an electricity system at
different wind power penetration levels[J].Energy,2014(72):360-370.
[4]Wang H,Wang L.A Novel Pumped Hydro Combined with Compressed Air
Energy Storage System[J].Energies,2013:1554-1567.
[5]YM K,Favrat D.Energy and exergy analysis of a mocro-compressed air
energy storage and air cycle heating and cooling system[J].Energy,2010,35(1):
213–220.
[6]Yao E,Wang H,Liu L.A Novel Constant-Pressure Pumped Hydro Combined
with Compressed Air Energy Storage System[J].Energies,2015:154-171.
Content of the invention
It is an object of the invention to provide a kind of compressed air double-energy storage system without external heat source, not only makes full use of high pressure
The energy of air, efficient recovery the heat using compressor air-discharging, also reduce system mesohigh container cost, and significantly subtract
The consumption of recirculated water is lacked, while improve the operational efficiency and economy of system.
For reaching above-mentioned purpose, the present invention is adopted the following technical scheme that and is achieved：
A kind of compressed air double-energy storage system without external heat source, including compressor bank, expansion unit, storage air compression
Can underground gas storage ore deposit hole, the encompassing cabin of the first aqueous vapor, the encompassing cabin of the second aqueous vapor, heat regenerator group, storage heater group, first
Motor, the second motor, the first electromotor, the second electromotor, the 3rd electromotor, water turbine set, water pump assembly and cistern；
First motor connects compressor bank；The entrance in the outlet connection underground gas storage ore deposit hole of compressor bank, for the
Atmospheric air is compressed under driving and is stored in underground gas storage ore deposit hole by one motor；The outlet in underground gas storage ore deposit hole point two-way,
Connect the gas access and the encompassing cabin of the second aqueous vapor in the encompassing cabin of the first aqueous vapor respectively by the second control valve and the 3rd control valve
Gas access；
The gas outlet in the encompassing cabin of the first aqueous vapor connects a mouths of the 3rd electric T-shaped valve, the gas in the encompassing cabin of the second aqueous vapor
The b mouths of outlet the 3rd electric T-shaped valve of connection, first accumulation of heat in the c mouths connection storage heater group of the 3rd electric T-shaped valve
First heat exchanger channels entrance of formula heater；Expansion unit includes multistage decompressor, arranges that a heat accumulating type adds before each decompressor
Hot device；The entrance of a decompressor after the first heat exchanger channels outlet connection of storage heater, after the outlet connection of decompressor
First heat exchanger channels entrance of one storage heater；Compressor bank includes multi-stage compressor, arranges one after each section of compressor
Individual heat regenerator；First heat exchanger channels entrance of heat regenerator connects the entrance of the last period compressor, and the first of heat regenerator changes
The entrance of one section of compressor after passage of heat outlet connection；The entrance connection air of first compressor in compressor bank, last
The outlet of individual compressor connects the entrance in underground gas storage ore deposit hole after the first heat exchanger channels of last heat regenerator；Each heat is returned
Receive the second heat exchanger channels entrance of the second heat exchanger channels outlet each storage heater of connection of device, the of each storage heater
Second heat exchanger channels entrance of each heat regenerator of two heat exchanger channels outlet connection；
The a mouths of the second electric T-shaped valve connect the liquid inlet in the encompassing cabin of the first aqueous vapor, and b mouths connect the encompassing cabin of the second aqueous vapor
Liquid inlet, c mouths connect water pump outlet；The a mouths of the first electric T-shaped valve connect the liquid discharge in the encompassing cabin of the first aqueous vapor
Mouthful, b mouths connect the liquid outlet in the encompassing cabin of the second aqueous vapor, and c mouths connect the water inlet of the hydraulic turbine, and the outlet connection of the hydraulic turbine stores
The entrance in pond, the water inlet of the outlet connection water pump of cistern；The hydraulic turbine connects the second electromotor, and water pump connection second is electronic
Machine.
Further, the outlet in underground gas storage ore deposit hole connects the first heat exchanger channels entrance of preheater through the 4th control valve；
Second heat exchanger channels entrance connection heat regenerator group the second heat exchange lane exit of preheater, the second heat exchanger channels of preheater go out
Mouth connection heat regenerator group the second heat exchange passage inlet；The first heat exchanger channels outlet of preheater connects entering for preexpanding turbine
Mouthful.
Further, before work starts, all valves keep closing state, filled with water in the encompassing cabin of the first aqueous vapor；Energy storage
When process starts, the first control valve of underground gas storage ore deposit hole outlet is first turned on, the first electric motor operation is driven using electric energy, is led to
Cross the first motor and drive compressor bank work, during air pressurized is stored to Large Underground gas storage ore deposit hole, convert electrical energy into
Air internal energy is stored wherein；The High Temperature High Pressure air of each section of compressor outlet is stored in heat accumulating type through corresponding heat regenerator heat absorption and adds
In hot device.
Further, the electric energy period in short supply, open the 4th and control valve, make the high pressure being stored in Large Underground gas storage ore deposit hole
The heating of air preheated device, enters back into preexpanding turbine and expands in advance, so as to drive three-motor to generate electricity, opens the afterwards again
Two control valves, the pressure-air that expansion is depressurized to constant pressure is passed through in the encompassing cabin of the first aqueous vapor, the encompassing cabin of the first aqueous vapor is made
In water stable in the presence of gases at high pressure discharge and a mouths via the first electric T-shaped valve drive hydraulic turbine acting, realize
To electric transformation of energy, the hydraulic turbine is drained into cistern and temporarily stores current mechanical energy afterwards.
Further, after in the encompassing cabin of the first aqueous vapor, current drive the hydraulic turbine to generate electricity for a period of time, the second electric T-shaped valve
B mouths connect, the water in cistern sends into the encompassing cabin of the second aqueous vapor via water pump, and sets pump capacity more than hydraulic turbine stream
Amount, the draining power generation process in the encompassing cabin of the first aqueous vapor starts prior to the water filling process in the encompassing cabin of the second aqueous vapor, but two processes are simultaneously
Complete, be carried out continuously hydraulic turbine discharge process；In the encompassing cabin of second aqueous vapor, water-filling closes the second electric three passes after finishing immediately
The b mouths of valve, open the b mouths and the 3rd control valve of the first electric T-shaped valve, and the gases at high pressure in gas storage ore deposit hole are with constant pressure
Enter in the encompassing cabin of the second aqueous vapor, make the water in the encompassing cabin of the second aqueous vapor the hydraulic turbine be driven via the b mouths of the first electric T-shaped valve
Group acting generates electricity and water is entered cistern.
Further, when the encompassing cabin of the second aqueous vapor starts draining electric discharge, the water in the encompassing cabin of the first aqueous vapor is also emptied simultaneously,
The second a mouth that control valve and first electric T-shaped valve is now closed, and a mouths for opening the 3rd electric T-shaped valve make the first aqueous vapor encompassing
The expanded unit expansion work of pressure-air in cabin generates electricity.
The present invention is a kind of compressed air double-energy storage system without external heat source, including compressor bank, expansion unit, water wheels
The encompassing cabin of unit, water pump assembly, cistern, aqueous vapor, air storage chamber, heat regenerator and storage heater；The compressor bank exists
Air is collapsed into pressure-air under motor drive and is stored in large-scale gas storage ore deposit hole；The large-scale gas storage ore deposit hole goes out
Mouthful through the preexpanding turbine connection encompassing cabin upper entrance of aqueous vapor, then its upper outlet and multistage decompressor when cabin Nei Shui is drained
Group is connected；The entrance of the hydraulic turbine is connected with the encompassing cabin lower part outlet of aqueous vapor, and its outlet is then connected with cistern upper entrance；
The pump entrance connects cistern lower part outlet, and which is exported by component and the encompassing cabin centre entrance phases of aqueous vapor such as valve pipes
Even.
In such scheme, the encompassing cabin of the aqueous vapor includes the encompassing cabin of the first aqueous vapor and the encompassing cabin of the second aqueous vapor, both bottoms
Outlet is connected with the hydraulic turbine by electric T-shaped valve, and upper outlet is connected with expansion unit by electric T-shaped valve, centre exit
It is connected with water pump by electric T-shaped valve, the alternation in thermal energy storage process of the encompassing cabin of two aqueous vapors expands unit and water pump machine
Group discontinuous operation, water turbine set are then continuously run.
The expansion unit connects the encompassing cabin upper outlet of aqueous vapor, and is made up of multistage centripetal expander.Every section of decompressor
Storage heater is provided with before entrance for preheated air, and heating air institute calorific requirement comes from the generation of compressed air process
Heat；Expander process is isothermal expansion, and the delivery temperature after expansion is relatively low, can be directly discharged into air or for specific
The cooling of occasion.
In such scheme, the electric T-shaped valve is to carry out the device of work by the timing principles of clock and watch, when the meter for setting
When the time start, device output signal is switched on or off related circuit to control the working condition of relevant device.
Relative to prior art, the invention has the advantages that：
1. the encompassing cabin of liang aqueous vapor is used alternatingly, and saves nacelle material and circulation water consumption, reduces ground floor space, and energy
Ensure that discharge process is carried out continuously, and water turbine set, water pump assembly, expansion unit are then continuously run in discharge process, saving sets
Standby expense；
2. pressure-air is initially used for preexpanding generating, so that its outlet pressure is constant, is used further to the hydraulic turbine afterwards and sends out
Electricity is generated electricity with decompressor, and expansion process adopts isothermal expansion, realizes the maximization of energy utilization, improves the defeated of energy-storage system
Go out work(and generating efficiency；
3. whole system is saved fuel, and the discharge of nonstaining property gas, is improve without the need for external heat source in cyclic process
The performance driving economy and environment friendly of whole energy-storage system；
4. it is used for storing gases at high pressure by large-scale discarded sub-terrain mines hole, reduces the construction cost of system, improve high pressure
The safety of gas storage.
The present invention replaces high-pressure bottle with large-scale discarded ore deposit hole；Set up the encompassing cabin of aqueous vapor and be allowed to encompassing with original aqueous vapor
Cabin is used alternatingly, reduce the encompassing cabin of aqueous vapor volume, save for promote the hydraulic turbine work quantity of circulating water and meanwhile reduce
For storing the pond volume of recirculated water；Isothermal expansion unit is added so as to making full use of residual high pressure gas in the encompassing cabin of aqueous vapor
Body, arrange heat regenerator with reclaim compressor generation heat and for preheating treat expanding gas, realize energy utilization maximize.
Description of the drawings
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail.
Fig. 1 is a kind of structural representation of the compressed air double-energy storage system without external heat source of the present invention；
Control principle flow charts of the Fig. 2 for electric T-shaped valve V2；
Control principle flow charts of the Fig. 3 for electric T-shaped valve V3；
Control principle flow charts of the Fig. 4 for electric T-shaped valve V4；
Wherein：1 is low pressure compression section, and 2 is the first heat regenerator, and 3 is high pressure compressed section, and 4 is the second heat regenerator, and 5 are
Large Underground gas storage ore deposit hole, 6 is the encompassing cabin of the first aqueous vapor, and 7 is water turbine set, and 8 is cistern, and 9 is water pump, and 10 is the second aqueous vapor
Encompassing cabin, 11 is the first storage heater, and 12 is high pressure expansion arc, and 13 is the second storage heater, and 14 is inflated with low pressure
Section, 15 is the first electromotor, and 16 is the first motor, and 17 is three-motor, and 18 is preheater, and 19 is preexpanding turbine, 20
For the second electromotor, 21 is the second motor, and V1 is the first control valve, and V5 is the second control valve, and V6 is the 3rd control valve, and V7 is
4th control valve, V2 are the first electric T-shaped valve, and V3 is the second electric T-shaped valve, and V4 is the 3rd electric T-shaped valve.
Specific embodiment
As shown in figure 1, the present invention is a kind of compressed air double-energy storage system without external heat source, including low pressure compression section 1,
High pressure compressed section 3, the high pressure expansion arc 12 for generating electricity, inflated with low pressure section 14, for voltage stabilizing and the preexpanding whirlpool that recovers energy
Wheel 19, stores the Large Underground gas storage ore deposit hole 5 of air compression energy, the encompassing cabin 6 of the first aqueous vapor that the virtual high position dam of realization builds
With the encompassing cabin 10 of the second aqueous vapor, the first heat regenerator 2, second heat regenerator 4 of compressed air heat is reclaimed, gas to be expanded is heated
The mechanical energy of water is changed into electric energy by the first storage heater 11 of body, the second storage heater 13 and preheater 18
The hydraulic turbine 7, the water pump 9 of loopback recirculated water and other auxiliary equipments.
The output shaft connection low pressure compression section 1 of the first motor 16 and high pressure compressed section 3；The outlet warp of low pressure compression section 1
The entrance of the first heat exchanger channels connection high pressure compressed section 3 of the first heat regenerator 2, the outlet of high pressure compressed section 3 is by the second heat
Connect the entrance in Large Underground gas storage ore deposit hole 5 after first heat exchanger channels of withdrawer 4 through the first control valve V1.
The outlet in underground gas storage ore deposit hole 5 connects the first heat exchanger channels entrance of preheater 18 through the 4th control valve V7；Preheating
Second heat exchanger channels entrance of device 18 connects the outlet of the second heat exchanger channels of storage heater, and the second heat exchange of preheater 18 is logical
Second heat exchanger channels entrance of the second heat exchanger channels entrance and the second heat regenerator 4 of road outlet the first heat regenerator 2 of connection.In advance
The entrance of the first heat exchanger channels outlet connection preexpanding turbine 19 of hot device 18, the outlet of preexpanding turbine 19 are divided into two-way, and one
The control valve V6 of Lu Jing tri- connect the gas access in the encompassing cabin 10 of the second aqueous vapor, and the control valve V5 of another road second connects the first water
The gas access in the encompassing cabin 6 of gas.
The gas outlet in the encompassing cabin 6 of the first aqueous vapor connects a mouths of the 3rd electric T-shaped valve V4, the encompassing cabin 10 of the second aqueous vapor
Gas outlet connects the b mouths of the 3rd electric T-shaped valve V4, and the c mouths of the 3rd electric T-shaped valve V4 connect the first storage heater 11
The first heat exchanger channels entrance, the first heat exchanger channels outlet connection high pressure expansion arc 12 of the first storage heater 11 enters
Mouthful, outlet the entering through the first heat exchanger channels connection inflated with low pressure section 14 of the second storage heater 13 of high pressure expansion arc 12
Mouthful, the outlet connection air of inflated with low pressure section 14 or the user for needing using low temperature cold air.
Second heat exchanger channels of the first heat exchanger channels outlet first heat regenerator 2 of connection of the first storage heater 11 enter
Mouth and the second heat exchanger channels entrance of the second heat regenerator 4；The first heat exchanger channels outlet connection of the second storage heater 13
Second heat exchanger channels entrance of the second heat exchanger channels entrance and the second heat regenerator 4 of the first heat regenerator 2.First heat regenerator
The second of the second heat exchanger channels outlet connection heat regenerator of 2 the second heat exchanger channels outlet and the second heat regenerator 4 is changed
The passage of heat.
The a mouths of the second electric T-shaped valve V3 connect the liquid inlet in the encompassing cabin 6 of the first aqueous vapor, and b mouths connect the second aqueous vapor altogether
Hold the liquid inlet in cabin 10, c mouths connect the outlet of water pump 9.The a mouths of the first electric T-shaped valve V2 connect the encompassing cabin of the first aqueous vapor
6 liquid outlet, b mouths connect the liquid outlet in the encompassing cabin 10 of the second aqueous vapor, and c mouths connect the water inlet of the hydraulic turbine 7, the hydraulic turbine 7
Outlet connect cistern entrance, cistern 8 outlet connection water pump 9 water inlet.The hydraulic turbine 7 connects the second electromotor
20 and water pump 9 connect the second electromotor 21.
The present invention is a kind of compressed air double-energy storage system without external heat source, and before work starts, all valves keep tight
Closed state, filled with a certain amount of water in the encompassing cabin 6 of the first aqueous vapor.When thermal energy storage process starts, the first control valve V1 is first turned on, profit
The first motor 16 is driven to work with user power utilization low ebb period electric energy more than needed or renewable energy power generation electric energy, by the first electricity
Motivation 16 drives low pressure compression section 1 and high pressure compressed section 3 to work, during air pressurized is stored to Large Underground gas storage ore deposit hole 5, will
Electric energy changes into air internal energy and stores wherein.Wherein, atmosphere gas enter low pressure compression section 1 by pipeline and carry out first time pressure
Contracting, now, 1 exit gas of low pressure compression section is High Temperature High Pressure air, and gas entrance heat exchange of first heat exchanger 2 is cooled to pre-
If temperature enters back into high pressure compressed section 3 and carries out the second second compression, meanwhile, after the 4th heat regenerator 4 reclaims 3 pressurization of high pressure compressed section
The heat of pressure high temperature hot gas, and the heat reclaimed with second heat exchanger 2 is together stored in storage heater, afterwards
Close first and control valve V1, thermal energy storage process terminates.
The electric energy period in short supply, the 4th control valve V7 is first turned on, makes the high pressure being stored in Large Underground gas storage ore deposit hole 5 empty
The preheated device 18 of gas is heated, and is entered back into the 3rd electromotor 17 of 19 advance expansion driven of preexpanding turbine and is generated electricity, so that high in hole
Pressure air is down to steady pressure and reclaims the portion of energy, then opens the second control valve V5, and expansion is depressurized to constant pressure
Pressure-air is passed through in the encompassing cabin 6 of the first aqueous vapor so that the water in cabin in the presence of gases at high pressure stable discharge and via
The a mouths of the first electric T-shaped valve V2 drive the hydraulic turbine 7 to do work, and realize current mechanical energy to electric transformation of energy, and the hydraulic turbine is arranged afterwards
Water enters 8 temporary transient storage of cistern.Wherein, the 4th control valve V7 keeps its opening, the hydraulic turbine in whole discharge process
7th, 19 continuous work of preheater 18 and preexpanding turbine, until discharge process terminates.
While in the encompassing cabin 6 of first aqueous vapor, current drive the hydraulic turbine 7 to generate electricity, the b mouths of the second electric T-shaped valve V3 are suitable
It is switched on when opportunity, the water in cistern 8 sends into the encompassing cabin 10 of the second aqueous vapor via water pump 9, and sets the flow of water pump 9 and is more than
The flow of the hydraulic turbine 7, the draining power generation process in the encompassing cabin 6 of the first aqueous vapor are opened prior to the water filling process in the encompassing cabin 10 of the second aqueous vapor
Begin, but two processes are completed simultaneously, so that it is guaranteed that hydraulic turbine discharge process is carried out continuously.In the encompassing cabin 10 of second aqueous vapor, water-filling is finished
Close the b mouths of the second electric T-shaped valve V3 afterwards immediately, open the b mouths and the 3rd control valve V6 of the first electric T-shaped valve V2, gas storage
Gases at high pressure in ore deposit hole 5 are entered in the encompassing cabin 10 of the second aqueous vapor with constant pressure, make water in cabin via first electronic three
The b mouths of port valve V2 drive the acting of the hydraulic turbine 7 to generate electricity and water is entered cistern 8.
When the encompassing cabin 10 of second aqueous vapor starts draining electric discharge, the water in the encompassing cabin 6 of the first aqueous vapor is also emptied simultaneously, is now closed
The second control valve V5, a mouths of the first electric T-shaped valve V2 is closed, a mouths for opening the 3rd electric T-shaped valve V4 make the high pressure in cabin empty
Gas generates electricity through isothermal expansion unit (high pressure expansion arc 12 and inflated with low pressure section 14) expansion work.Wherein, cabin inner high voltage air elder generation
Preheat through the first storage heater 11, enter 12 expansion work of high pressure expansion arc afterwards, now expander outlet air
Temperature, pressure decreases, and aerofluxuss enter the second storage heater 13 and heat again, then do work through inflated with low pressure section 14
Drive the first electromotor 15 to generate electricity to export.The heat of the first storage heater 11 and the second storage heater 13 both from
The heat of energy storage stage storage.After pressure-air in the encompassing cabin 10 of second aqueous vapor is completely exhausted out, closes the 3rd and control valve V6, beat
The a mouths of the second electric T-shaped valve V3 are opened, makes water in cistern 8 the encompassing cabin 6 of the first aqueous vapor be entered via water pump 9, and set the
When in the encompassing cabin 6 of one aqueous vapor, the draining in the expansion process of air and time used by water filling process and the encompassing cabin 10 of the second aqueous vapor generates electricity
Between identical, to ensure that water turbine set continuously generates electricity.
The b mouths of the 3rd electric T-shaped valve V4 after water is completely exhausted out in the encompassing cabin 10 of the second aqueous vapor, are opened, the second aqueous vapor is made
Gases at high pressure in encompassing cabin 10 enter high pressure expansion arc 12 and 14 expansion power generation of inflated with low pressure section, the first storage heater 11
Then it is used for the pressure-air that heating enters decompressor with the second storage heater 13.The encompassing cabin of two aqueous vapors replaces again and again
Use, until power generation process terminates, and start next round thermal energy storage process.
As shown in Figure 2,3, 4, the respectively control principle flow chart of electric T-shaped valve V2, V3, V4.Due to expanding unit institute
3rd electric T-shaped valve V4 of connection is slightly had not with the result of the action in the secondary cyclic processes of N (N >=2) during energy-releasing cycle first
Same, for ease of together describing with other valves, take the secondary circulation of exoergic process N (N >=2).Wherein, 0 moment represented the first aqueous vapor
Encompassing cabin 6 starts draining and generates electricity；t1Moment represents that the encompassing 10 inner high voltage gas expansion of cabin of the second aqueous vapor is finished, and starts thereto
Water-filling；t2Moment represents that encompassing 10 water-filling of cabin of the second aqueous vapor terminates, and encompassing 6 draining of cabin of the first aqueous vapor finishes and starts to discharge wherein
Pressure-air is allowed to expansion power generation；t3Moment represents that encompassing 6 aerofluxuss of cabin of the first aqueous vapor are finished, and starts water-filling thereto；t4Moment
Represent that encompassing 6 water-filling of cabin of the first aqueous vapor is finished, the water in the encompassing cabin 10 of the second aqueous vapor is also emptied simultaneously.Time signal shown in figure
Sent by timer, all three-way valve connect same timer.When electric T-shaped valve works, time signal input is patrolled by timer
Module is collected, by signal inputs different for time range to control module, signal control valve after control module analysis conversion
To different working conditions, the encompassing cabin 6 of the first aqueous vapor, encompassing 10 alternation of cabin of the second aqueous vapor, expansion unit, water is achieved in
Pump assembly discontinuous operation and the purpose of water turbine set continuous and stable electric generation.
Claims (6)
1. a kind of compressed air double-energy storage system without external heat source, it is characterised in that including compressor bank, expansion unit, deposit
The underground gas storage ore deposit hole (5) of storage air compression energy, the encompassing cabin of the first aqueous vapor (6), the encompassing cabin of the second aqueous vapor (10), heat regenerator
Group, storage heater group, the first motor, the second motor, the first electromotor, the second electromotor, the 3rd electromotor, water wheels
Machine (7), water pump (9) and cistern (8)；
First motor connects compressor bank；The entrance of outlet connection underground gas storage ore deposit hole (5) of compressor bank, for first
Atmospheric air is compressed under driving and is stored in underground gas storage ore deposit hole (5) by motor；The outlet in underground gas storage ore deposit hole (5) is divided to two
Road, respectively by the second control valve (V5) and the gas access and the of the 3rd control valve (V6) the first aqueous vapor of connection encompassing cabin (6)
The gas access in the encompassing cabin of two aqueous vapors (10)；
The gas outlet in the encompassing cabin of the first aqueous vapor (6) connects a mouths of the 3rd electric T-shaped valve (V4), the encompassing cabin of the second aqueous vapor (10)
Gas outlet connect the 3rd electric T-shaped valve (V4) b mouths, the 3rd electric T-shaped valve (V4) c mouths connection storage heater
First heat exchanger channels entrance of first storage heater in group；Expansion unit includes multistage decompressor, cloth before each decompressor
Put a storage heater；The entrance of a decompressor, expansion after the first heat exchanger channels outlet connection of storage heater
First heat exchanger channels entrance of a storage heater after the outlet connection of machine；Compressor bank includes multi-stage compressor, each section
A heat regenerator is arranged after compressor；First heat exchanger channels entrance of heat regenerator connects the outlet of the last period compressor, heat
The entrance of one section of compressor after the first heat exchanger channels outlet connection of withdrawer；In compressor bank, the entrance of first compressor connects
Air is connect, the outlet of last compressor connects underground gas storage ore deposit hole after the first heat exchanger channels of last heat regenerator
(5) entrance；The second heat exchanger channels outlet of each heat regenerator connects the second heat exchanger channels entrance of each storage heater, respectively
The second heat exchanger channels outlet of storage heater connects the second heat exchanger channels entrance of each heat regenerator；
The a mouths of the second electric T-shaped valve (V3) connect the liquid inlet of the first aqueous vapor encompassing cabin (6), and b mouths connect the second aqueous vapor altogether
Hold the liquid inlet of cabin (10), the outlet of c mouths connection water pump (9)；The a mouths of the first electric T-shaped valve (V2) connect the first aqueous vapor
The liquid outlet of encompassing cabin (6), b mouths connect the liquid outlet of the second aqueous vapor encompassing cabin (10), and c mouths connect entering for the hydraulic turbine (7)
The mouth of a river, the outlet of the hydraulic turbine (7) connect the entrance of cistern, the water inlet of outlet connection water pump (9) of cistern (8)；Water
Turbine (7) connects the second electromotor, and water pump (9) connects the second motor.
2. a kind of compressed air double-energy storage system without external heat source according to claim 1, it is characterised in that store up underground
First heat exchanger channels entrance of the outlet in gas ore deposit hole through the 4th control valve (V7) connection preheater (18)；The second of preheater (18)
Heat exchanger channels entrance connection heat regenerator group the second heat exchange lane exit, the second heat exchanger channels outlet connection heat of preheater (18)
The heat exchange passage inlet of withdrawer group second；The first heat exchanger channels outlet of preheater (18) connects entering for preexpanding turbine (19)
Mouthful.
3. a kind of compressed air double-energy storage system without external heat source according to claim 1, it is characterised in that work is opened
Before beginning, all valves keep closing state, filled with water in the encompassing cabin of the first aqueous vapor (6)；When thermal energy storage process starts, it is first turned on ground
First control valve (V1) of lower gas storage ore deposit hole outlet, is driven the first electric motor operation using electric energy, is driven by the first motor
Compressor bank works, and during air pressurized is stored to Large Underground gas storage ore deposit hole, converts electrical energy into air internal energy and stores wherein；
The heat of the High Temperature High Pressure air of each section of compressor outlet absorbs through corresponding heat regenerator and is stored in storage heater.
4. a kind of compressed air double-energy storage system without external heat source according to claim 2, it is characterised in that electric energy is tight
The scarce period, open the 4th and control valve (V7), make the pressure-air being stored in Large Underground gas storage ore deposit hole (5) preheated device (18)
Heating, enters back into preexpanding turbine (19) and expands in advance, so as to drive the 3rd electrical power generators, open the second control valve afterwards again
(V5), the pressure-air that expansion is depressurized to constant pressure is passed through in the encompassing cabin of the first aqueous vapor (6), the encompassing cabin of the first aqueous vapor is made
(6) water in is stable in the presence of gases at high pressure to discharge and a mouths driving hydraulic turbine (7) via the first electric T-shaped valve (V2)
Acting, realizes current mechanical energy to electric transformation of energy, and the hydraulic turbine is drained into cistern (8) temporarily storage afterwards.
5. a kind of compressed air double-energy storage system without external heat source according to claim 4, it is characterised in that the first water
After in the encompassing cabin of gas (6), current drive the hydraulic turbine (7) to generate electricity for a period of time, the b mouths of the second electric T-shaped valve (V3) are connected, water-retention
Water in pond (8) is encompassing cabin (10) via water pump (9) the second aqueous vapor of feeding, and sets pump capacity more than the hydraulic turbine (7) flow,
The draining power generation process in the encompassing cabin of the first aqueous vapor (6) starts prior to the water filling process in the encompassing cabin of the second aqueous vapor (10), but two processes
Complete simultaneously, be carried out continuously hydraulic turbine discharge process；The interior water-filling in the encompassing cabin of second aqueous vapor (10) closes second after finishing immediately
The b mouths of electric T-shaped valve (V3), open b mouths and the 3rd control valve (V6) of the first electric T-shaped valve (V2), in gas storage ore deposit hole
Gases at high pressure are entered in the second aqueous vapor encompassing cabin (10) with constant pressure, make water in the encompassing cabin of the second aqueous vapor (10) via the
The b mouths of one electric T-shaped valve (V2) drive the hydraulic turbine (7) acting to generate electricity and water is entered cistern (8).
6. a kind of compressed air double-energy storage system without external heat source according to claim 5, it is characterised in that the second water
When the encompassing cabin of gas (10) starts draining electric discharge, the water in the encompassing cabin of the first aqueous vapor (6) is also emptied simultaneously, is now closed second and is controlled
Valve (V5), a mouths of the first electric T-shaped valve (V2), a mouths for opening the 3rd electric T-shaped valve (V4) make the encompassing cabin of the first aqueous vapor (6)
The expanded unit expansion work of interior pressure-air generates electricity.
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