CN208456820U - A kind of heat pump supercritical air energy storage system - Google Patents
A kind of heat pump supercritical air energy storage system Download PDFInfo
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- CN208456820U CN208456820U CN201820750346.7U CN201820750346U CN208456820U CN 208456820 U CN208456820 U CN 208456820U CN 201820750346 U CN201820750346 U CN 201820750346U CN 208456820 U CN208456820 U CN 208456820U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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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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- 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
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Abstract
The utility model discloses a kind of heat pump supercritical air energy storage systems, high pressure conditions are compressed air to using power station low ebb (low price) electricity, and pressure-air is cooled to cold state (while storing thermal energy made from heat pump cycle) by the cryogenic cold energy obtained using the cold energy of storage and heat pump cycle, obtains liquid air after decompression；In peak of power consumption, high-pressure liquid air enters regenerator after cryogenic pump is pressurized, it absorbs heat to normal temperature high voltage state, while storing cold energy, and further absorb stored thermal energy (including the air heat of compression and heat pump cycle heating) afterwards by expansion machine driving generator power generation.The heat pump supercritical air energy storage system of the utility model have many advantages, such as high energy density, high-efficient, strong flexibility, suitable for peak load regulation network and various renewable energy power stations, do not generate greenhouse gases.
Description
Technical field
The utility model belongs to energy storing technology field, is related to a kind of air energy storage systems more particularly to one kind is based on
Heat pump cycle and supercritical air storage energy and the energy-storage system for utilizing stored energy production electric energy.
Background technique
In recent years, renewable energy just gradually becomes newly-increased electric power important sources, and electric network composition and operational mode all occur
Great change.With becoming increasingly popular for renewable energy (such as wind energy, solar energy), and peak load regulation network, raising power grid can
By the urgent need of property and improvement power quality, the importance of electric energy storing system is increasingly prominent.Energy storage is smart grid, can be again
The high accounting energy resource system of the life energy, the important component of " internet+" wisdom energy (hereinafter referred to as energy internet) and pass
Key support technology.Energy storage can provide a variety of clothes such as peak regulation, frequency modulation, spare, black starting-up, demand response support for operation of power networks
Business is the important means for promoting conventional electric power system flexibility, economy and safety；Energy storage can significantly improve wind, light etc.
The consumption of renewable energy is horizontal, support distribution formula electric power and microgrid, is to push the main body energy from fossil energy to renewable energy
The key technology that source substitutes；Energy storage can promote production of energy consumption opening and shares and flexibly transaction, realization multipotency collaboration, be structure
Energy internet is built, power system reform is pushed and promotes the key foundation of the new industry situation development of the energy.
At present existing power energy storage technology include draw water energy storage, compressed-air energy storage, batteries to store energy, superconduction magnetic energy, fly
Take turns energy storage and super capacitor etc..The good situation of China's energy storage presentation diverse development: water-storage is quickly grown；Compressed air storage
Energy, flywheel energy storage, superconducting energy storage and super capacitor, the energy storage skill such as lead storage battery, lithium ion battery, sodium-sulphur battery, flow battery
Art research and development application accelerates；Heat accumulation, Chu Leng, hydrogen storage technology also achieve certain progress.Wherein with energy storage of drawing water, heat accumulation energy storage and pressure
Contracting air energy storage is the physical method energy storage of representative since its is at low cost, stored energy capacitance is big, is suitble to large-scale commercial application, about
Account for the 99.5% of world's energy storage total amount.
Power station of drawing water energy-storage system allows motor to drive the water of the low reservoir of pump handle when electric system is in valley load
High reservoir is extracted by pipeline to consume a part of electric energy.When peak load comes temporarily, the water of high reservoir makes water pump by pipeline
With motor reversed operation and become the hydraulic turbine and generator and issue electric energy supply user, thus play the role of peak load shifting.
The technical mature and reliable of power station of drawing water energy-storage system, high-efficient (about 70%), the advantages that stored energy capacitance is big, make extensively at present
With.But power station of drawing water energy-storage system needs special geographical conditions two reservoirs of construction and dam, construction period very long by (one
As about 7~15 years), initial investment is huge.It is more intractable, it builds large reservoir meeting large area and floods vegetation even city,
Ecology and immigration problem are caused, therefore builds power station of drawing water energy-storage system and receives increasing limitation.
Air is compressed and is stored in air storage chamber in low power consumption by conventional compression air energy storage systems, is converted into electric energy
The interior of air can store；In peak of power consumption, pressure-air is discharged from air storage chamber, into gas-turbine combustion chamber with fuel one
Then combust drives turbine power generation.Compressed-air energy-storage system is larger with stored energy capacitance, the energy storage period is long, high-efficient
The advantages that (50%~70%) and specific investment cost are relatively small.But the energy storage density of compressed air energy storage technology is low, difficult point is
Need suitably can storing compressed air place, such as the cavern or abandoned mine etc. of sealing.Moreover, compressed-air energy storage system
System still relies on combustion of fossil fuels and provides heat source, on the one hand faces the threat that fossil fuel is petered out with rise in price, separately
On the one hand its burning still generates the pollutants such as nitride, sulfide and carbon dioxide, does not meet green (zero-emission), renewable
Energy development requirement.
To solve the main problem that conventional compression air energy storage systems face, recent years, domestic and foreign scholars carried out respectively
Advanced adiabatic compression air energy storage systems (AACAES), ground compressed-air energy-storage system (SVCAES), the compression with backheat are empty
The research etc. of gas energy storage system (AACAES) and air vapor combined cycle compressed-air energy-storage system (CASH), makes compressed air
Energy-storage system substantially can be to avoid combustion of fossil fuels, but the energy density of compressed-air energy-storage system is still very low, needs big
The air storage chamber of type.
In recent years, domestic and foreign scholars have developed liquid air energy-storage system etc., due to being stored using normal pressure liquid air, storage
Energy density is higher.But liquid air energy-storage system there are system circulation efficiency it is lower, flexibility is poor the problems such as.
Utility model content
The shortcomings that in the presence of existing air energy storage technology and deficiency, the purpose of the utility model is to provide a kind of heat
Supercritical air energy storage system is pumped, has the characteristics that energy storage density is big compared to existing compressed-air energy-storage system etc., compares liquid
State air energy storage systems have the characteristics that system stored energy is high-efficient, strong flexibility, can be suitble to various types of power stations are mating to make
With.
In order to achieve the above objectives, the technical solution of the utility model is:
A kind of heat pump supercritical air energy storage system, including air compressor unit, regenerative heat exchanger, cold-storage heat-exchanger, liquid
State air reservoir, air expander group, heat pump cycle compressor set, heat pump cycle expand unit, cryogenic pump, which is characterized in that
The gas outlet of the heat pump cycle compressor set expands unit through the regenerative heat exchanger and the heat pump cycle
Air inlet connection, the gas outlet of the heat pump cycle expansion unit is through the cold-storage heat-exchanger and the heat pump cycle compressor set
Air inlet connection, the heat pump cycle compressor set, regenerative heat exchanger, heat pump cycle expansion unit, between cold-storage heat-exchanger
Closed heat pump refrigerating heating circuit is formed by pipeline；
The air inlet of the air compressor unit is communicated with the atmosphere, and gas outlet is successively changed through the regenerative heat exchanger, cold-storage
The liquid air inlet communication of hot device and the liquid air tank top, and on the pipeline of the liquid air inlet communication
Equipped with expansion valve, the on-condensible gas exhaust outlet of the liquid air tank top connects through the cold-storage heat-exchanger and exhaust line
Logical, the air compressor unit, cold-storage heat-exchanger, by pipeline forms energy storage sky between liquid air storage tank at regenerative heat exchanger
Air circuit；
The liquid air of the liquid air tank bottom is exported through the cryogenic pump, cold-storage heat-exchanger, regenerative heat exchanger
It is connected to the air inlet of the air expander group, the exhaust outlet of the air expander group is communicated with the atmosphere, with the low temperature
Pump inlet connection pipeline be equipped with control valve, the liquid air storage tank, cryogenic pump, cold-storage heat-exchanger, regenerative heat exchanger,
The circuit that can do work is released by pipeline formation between air expander group.
The heat pump supercritical air energy storage system of the utility model, the course of work are as follows:
When energy storage, closing control valve, heat pump cycle compressor set described in power source drive follows the heat pump of Room-temperature low-pressure
Ring gas working medium is compressed to high temperature and pressure state, by the storage while being reduced to room temperature by the regenerative heat exchanger temperature later
Heat exchanger stores high temperature heat；The heat pump cycle gas working medium of normal temperature high voltage expands unit further across the heat pump cycle
It is changed into low temperature；The heat pump cycle gas working medium of low-temp low-pressure temperature after the cold-storage heat-exchanger is increased to room temperature
Cryogenic cold energy passes to the compressed air in energy storage air loop simultaneously；The heat pump cycle gas working medium of Room-temperature low-pressure reenters
The air inlet of the heat pump cycle compressor set participates in heat pump cycle；
And in energy storage, air compressor unit described in power source drive, by air boil down to pressure-air；Pressure-air warp
Crossing temperature after the regenerative heat exchanger reduces, further across after the cold-storage heat-exchanger to high pressure low temperature state, then by described
Expansion valve further decreases pressure and obtains high pressure low temperature liquid air and low temperature on-condensible gas, is deposited by the liquid air storage tank
Store up the liquid air and low temperature on-condensible gas；
When releasing energy, the control valve is opened, the liquid air in the liquid air storage tank is pressed after the cryogenic pump
Power is promoted to cryogenic high pressure state, flows through the cold-storage heat-exchanger later, and cryogenic cold energy is recycled, and further flows through described
Regenerative heat exchanger absorbs thermal energy, until high temperature pressure-air, high temperature pressure-air, which injects the air expander group expansion, to be done
Function.
Preferably, the heat pump cycle gas working medium is monoatomic molecules gas, Atom Molecule Gas or polyatom
One or more mixing of molecular gas.
The heat pump cycle gas working medium of the monoatomic molecules gas is one or two kinds of mixing of helium, argon gas.
Preferably, the power source of the heat pump cycle compressor set and air compressor unit is driving motor or wind energy conversion system；
It is with conventional power plant trough-electricity, nuclear power, wind-powered electricity generation, solar power generation, water power or tide hair when the power source is driving motor
One such or a variety of electricity is power supply.
Preferably, air cleaning and purifier apparatus are integrated in the air compressor unit and regenerative heat exchanger.Air pressure
Further include air cleaning and purifying in contracting, cooling procedure, removes solids and foreign gas in air.
Preferably, the air compressor unit, overall pressure tatio is between 36~340；The air expander group, overall expansion ratio
Between 38~340, final stage expander exhaust gas is close to normal pressure；The heat pump cycle compressor set, overall pressure tatio is between 5~40；
The heat pump cycle expands unit, and overall expansion ratio is between 5~40.
Preferably, in the air expander group, the air inlet of expanding machines at different levels first passes through accumulation of heat/heat exchanger heating and rises
Temperature.
Preferably, the air compressor unit, air expander group, heat pump cycle compressor set and/or heat pump cycle
Unit is expanded, using piston type, axial-flow type, radial inflow, screw or hybrid.
Preferably, the air compressor unit, air expander group are respectively distributed to a drive shaft or more drivings
On axis；The heat pump cycle compressor set, heat pump cycle expanding machine group are distributed in a drive shaft, or are passed through gearbox and connected
In the more drive shafts connect.
Preferably, the regenerative heat exchanger, accumulation of heat form are one of sensible heat, latent heat or chemical reaction heat or several
Kind, heat transfer form is that pressure-air directly contacts heat-storing material or exchanged heat by heat exchange surface and heat-storing material；It uses
Heat storage medium be water, paraffin, bio-oil, inorganic crystalline hydrate salt, fuse salt, metal and its alloy, organic fatty acid,
Stone, rock or concrete, heat storage medium are stored in thermally insulated container.
Preferably, the cold-storage heat-exchanger, cold-storage form are one of sensible heat cold-storage or solid-liquid phase change cold-storage or group
It closes；Its heat transfer form is that high-pressure liquid air exchanges heat in regenerator with cool storage medium direct contact heat transfer or non-direct contact；
The sensible heat cool storage medium of use is one of sealing ice hockey, sandstone, concrete, aluminium strip disk or other metallicses or several
Kind；Solid-liquid phase change cool storage medium is ammonia and its aqueous solution, salts solution, alkanes, olefin compound and its compound, alcohol
One or more of class and its aqueous solution, cool storage medium are stored in thermally insulated container.
It preferably, include heat pump cycle gas and compressed air heat exchange in the regenerative heat exchanger and cold-storage heat-exchanger
Heat exchanger, the heat exchanger form are shell and tube, fin-tube type, plate-fin or one of board-like or a variety of combination.
Preferably, the heat pump supercritical air energy storage system further includes that heat pump cycle gas return path is changed with compressed air
The low temperature heat exchanger of hot loop heat exchange, heat exchanger form are shell and tube, fin-tube type, plate-fin or one of board-like or more
The combination of kind.The cryogenic heat exchanger is mainly used for the heat exchange of energy storage air loop Yu heat pump refrigerating heating circuit.
Preferably, cold side of the gas outlet of heat pump cycle expansion unit successively through the cryogenic heat exchanger, cold-storage change
It is connected to after hot device with the air inlet of the heat pump cycle compressor set, the gas outlet of the air compressor unit is successively through the storage
Heat exchanger, cold-storage heat-exchanger, cryogenic heat exchanger hot side after connect with the liquid air import of the liquid air tank top
It is logical.
Preferably, the air compressor unit and air expander group are and are changed between plural serial stage, grade by the accumulation of heat
Hot device carries out the form of heat accumulation and heat release.
Compared with the existing technology, the heat pump supercritical air energy storage system of the utility model has significant technological merit:
High pressure conditions, and the low temperature obtained using the cold energy of storage and heat pump cycle are compressed air to using power station low ebb (low price) electricity
Pressure-air is cooled to cold state (while storing thermal energy made from heat pump cycle) by cold energy, obtains liquid air after decompression；?
Peak of power consumption, high-pressure liquid air enters regenerator, heat absorption to normal temperature high voltage state after cryogenic pump is pressurized, while storing cold
Can, and further absorb stored thermal energy (including the air heat of compression and heat pump cycle heating) and power generation is driven by expanding machine afterwards
Machine power generation.The heat pump supercritical air energy storage system of the utility model has high energy density, high-efficient, strong flexibility, is applicable in
In peak load regulation network and various renewable energy power stations, do not generate greenhouse gases the advantages that.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the heat pump supercritical air energy storage system embodiment 1 of the utility model；
Fig. 2 is the structural schematic diagram of the heat pump supercritical air energy storage system embodiment 2 of the utility model；
Fig. 3 is the structural schematic diagram of the heat pump supercritical air energy storage system embodiment 3 of the utility model；
Fig. 4 is the structural schematic diagram of the heat pump supercritical air energy storage system embodiment 4 of the utility model；
Wherein,
Air compressor unit 1, regenerative heat exchanger 2, cold-storage heat-exchanger 3, liquid air storage tank 4, air expander group 5, heat
Pump circulation compressor set 6, heat pump cycle expand unit 7, heat pump driving motor 8, driving motor 9, generator 10, expansion valve
13, control valve 17, cryogenic pump 19, pipeline 11,12,14,15,16,18,20,21,22,23,24,25, atmosphere A, low temperature change
Hot device 30.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, develop simultaneously implementation referring to the drawings
The utility model is further described in example.It should be noted that the implementation for not being painted or describing in attached drawing, for institute
Belong to form known to a person of ordinary skill in the art in technical field.
Embodiment 1
As shown in Figure 1, the embodiment 1 of the heat pump supercritical air energy storage system for the utility model.The utility model
Heat pump supercritical air energy storage system, including air compressor unit 1, regenerative heat exchanger 2, cold-storage heat-exchanger 3, liquid air storage tank
4, air expander group 5, heat pump cycle compressor set 6, heat pump cycle expand unit 7, cryogenic pump 19.
The gas outlet of heat pump cycle compressor set 6 connects through the air inlet of regenerative heat exchanger 2 and heat pump cycle expansion unit 7
Logical, the gas outlet of heat pump cycle expansion unit 7 is connected to through cold-storage heat-exchanger 3 with the air inlet of heat pump cycle compressor set 6, heat pump
Recycle compressor group 6, regenerative heat exchanger 2, heat pump cycle, which expand, to be formed between unit 7, cold-storage heat-exchanger 3 by pipeline 22~25
Closed heat pump refrigerating heating circuit.
The air inlet A of air compressor unit 1 is communicated with the atmosphere, and gas outlet is successively changed through accumulation of heat by pipeline 11,12,14
The liquid air inlet communication of hot device 2, cold-storage heat-exchanger 3 and the top of liquid air storage tank 4, and with 4 top of liquid air storage tank
The pipeline 14 of liquid air inlet communication be equipped with expansion valve 13, the on-condensible gas exhaust outlet at the top of liquid air storage tank 4
It being connected to through cold-storage heat-exchanger 3 with exhaust line 16 by pipeline 15, exhaust line 16 is communicated with the atmosphere, air compressor unit 1,
Regenerative heat exchanger 2, cold-storage heat-exchanger 3 pass through pipeline between liquid air storage tank 4 and form energy storage air loop.
The liquid air outlet of 4 bottom of liquid air storage tank is by pipeline 18,20~22 through cryogenic pump 19, cold-storage heat-exchanger
3, regenerative heat exchanger 2 is connected to the air inlet of air expander group 5, and the exhaust outlet of air expander group 5 is communicated with the atmosphere, and low
The pipeline of temperature 19 inlet communications of pump is equipped with control valve 17, liquid air storage tank 4, cryogenic pump 19, cold-storage heat-exchanger 3, accumulation of heat
The circuit that can do work is released by pipeline formation between heat exchanger 2, air expander group 5.
Further, heat pump cycle compressor set 6 and heat pump cycle expansion unit 7 are coaxially disposed, heat pump cycle compressor
The shared transmission shaft and a heat pump driving motor 8 of group 6 and heat pump cycle expansion unit 7 are affixed.
Further, the input shaft of air compressor unit 1 and a driving motor 9 are affixed, the output shaft of air expander group 5
It is affixed with a generator 10.
The heat pump supercritical air energy storage system of the utility model, the course of work are as follows:
In energy storage, heat pump cycle compressor set 6 is driven using heat pump driving motor 8, by a certain amount of Room-temperature low-pressure heat
Pump circulation gas working medium is compressed to high temperature and pressure state；It is reduced to room temperature into 2 temperature of regenerative heat exchanger by pipeline 22, simultaneously will
High temperature heat, which is stored to regenerative heat exchanger 2, becomes normal temperature high voltage heat pump cycle gas working medium；The heat pump cycle gas of normal temperature high voltage
Working medium enters heat pump cycle expansion unit 7 further across pipeline 23 and is changed into low-temp low-pressure heat pump cycle gas working medium, simultaneously
Generate the wasted work of expansion work supplement heat pump cycle compressor set 6；The heat pump cycle gas working medium of low-temp low-pressure is further through pipeline
24 enter cold-storage heat-exchanger 3, and temperature is increased to room temperature, and cryogenic cold energy is transferred to main road compressed air simultaneously；The heat of Room-temperature low-pressure
Pump circulation gas working medium passes through the air inlet participation heat pump cycle that pipeline 25 enters heat pump cycle compressor set 6 again；
When energy storage, low ebb (low price) electric drive motor 9 drives air compressor unit 1, and air A enters air compressor unit 1
It is compressed to normal temperature high voltage state, the outlet air of air compressor unit 1 enters regenerative heat exchanger 2, regenerative heat exchange by pipeline 11
2 outlet air of device is down to room temperature and enters cold-storage heat-exchanger 3 by pipeline 12, is cooled to by cool storage medium close to condensing temperature or liquid
Change temperature or less.The cryogenic high pressure air of cold-storage heat-exchanger 3 obtains liquid after 13 pressure reduction of expansion valve on pipeline 14 out
State air and low temperature on-condensible gas, are stored in liquid air storage tank 4.Low temperature on-condensible gas in liquid air storage tank 4 is through pushing up
Portion's pipeline 15 enters cold-storage heat-exchanger 3, and remaining cold energy is discharged into atmosphere through pipeline 16 after the absorption of cold-storage heat-exchanger 3.
When releasing energy, control valve 17 is opened, the liquid air in liquid air storage tank 4 enters cryogenic pump by pipeline 18
19, after liquid air is pressurized to certain pressure, cold-storage heat-exchanger 3 is delivered to by pipeline 20 and exchanges heat and gasifies with cool storage medium,
Cooling capacity is recycled simultaneously, the pressure-air of cold-storage heat-exchanger 3 is further heated up via pipeline 21 into regenerative heat exchanger 2 again out, temperature
Pressure-air after degree increases injects 5 expansion work of air expander group by pipeline 22, and generator 10 is driven to generate electricity.
When energy storage, heat pump driving motor 8 drives to be expanded by heat pump cycle compressor set 6, regenerative heat exchanger 2, heat pump cycle
The heat pump refrigerating heating loop works that unit 7, cold-storage heat-exchanger 3 are formed.Air compressor unit 1 works, and air expander group 5 is closed
Stop, valve 13 is opened, and control valve 17 is closed, and regenerative heat exchanger 2 stores heat, 3 released cold quantity of cold-storage heat-exchanger, by high pressure sky
Air cooling is to low temperature liquid.Then on the contrary, air compressor unit 1 is shut down when releasing energy, valve 13 is closed, and control valve 17 is opened.It is empty
Gas expands unit 5 and works, the recycling of cold-storage heat-exchanger 3, storage cooling capacity, while high-pressure liquid atmosphere temperature rising, then thermal energy is discharged, into one
Step promotes pressure-air temperature.
Embodiment 2
Fig. 2 is the embodiment 2 of the heat pump supercritical air energy storage system of the utility model, main structure and embodiment 1
It is identical, the difference is that increasing a cryogenic heat exchanger 30, low temperature on heat pump refrigerating heating circuit and energy storage air loop
Heat exchanger 30 is mainly used for the heat exchange of energy storage air loop Yu heat pump refrigerating heating circuit, and heat pump cycle expands the outlet of unit 7
Mouth is successively connected to after the cold side of cryogenic heat exchanger 30, cold-storage heat-exchanger 3 with the air inlet of heat pump cycle compressor set 6, air
The gas outlet of compressor set 1 successively through regenerative heat exchanger 2, cold-storage heat-exchanger 3, cryogenic heat exchanger 30 hot side after with liquid air
The liquid air inlet communication at 4 top of storage tank.
When energy storage, the cryogenic cold energy that heat pump refrigerating heating circuit generates passes through cryogenic heat exchanger 30 first and hands over cryogenic cold energy
After giving the low temperature compressed air in energy storage air loop, remaining cold energy is discharged by cold-storage heat-exchanger 3.
Embodiment 3
Fig. 3 is the embodiment 3 of the heat pump supercritical air energy storage system of the utility model, main structure and embodiment 1
Identical, air compressor unit 1 and air expander group 5 are to carry out heat accumulation by regenerative heat exchanger 3 between plural serial stage, grade and release
The form of heat.
Embodiment 4
Fig. 4 is the embodiment 4 of the heat pump supercritical air energy storage system of the utility model, and main structure combines implementation
The design feature of example 2,3, compressed air compressor group 1 and compressed air expansion unit 5 are to pass through storage between plural serial stage, grade
The form of heat exchanger 3 progress heat accumulation and heat release.And it is low on heat pump refrigerating heating circuit and energy storage air loop to increase one
Warm heat exchanger 30, cryogenic heat exchanger 30 are mainly used for the heat exchange of energy storage air loop Yu heat pump refrigerating heating circuit.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named
Title etc. can be different.The equivalent or simple change that all structure, feature and principles described according to the utility model design are done, is wrapped
It includes in the protection scope of the utility model.Those skilled in the art of the present invention can be to described specific
Embodiment is done various modifications or additions or is substituted in a similar manner, structure without departing from the utility model or
Person beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (10)
1. a kind of heat pump supercritical air energy storage system, including air compressor unit, regenerative heat exchanger, cold-storage heat-exchanger, liquid
Air reservoir, air expander group, heat pump cycle compressor set, heat pump cycle expand unit, cryogenic pump, which is characterized in that
Air inlet of the gas outlet of the heat pump cycle compressor set through the regenerative heat exchanger and heat pump cycle expansion unit
Mouthful connection, the gas outlet of heat pump cycle expansion unit through the cold-storage heat-exchanger and the heat pump cycle compressor set into
Port connection, the heat pump cycle compressor set, regenerative heat exchanger, heat pump cycle expand to be passed through between unit, cold-storage heat-exchanger
Pipeline forms closed heat pump refrigerating heating circuit；
The air inlet of the air compressor unit is communicated with the atmosphere, and gas outlet is successively through the regenerative heat exchanger, cold-storage heat-exchanger
With the liquid air inlet communication of the liquid air storage tank, and with the pipeline of the liquid air inlet communication be equipped with expansion
The on-condensible gas exhaust outlet of valve, the liquid air tank top is connected to through the cold-storage heat-exchanger with exhaust line, described
Air compressor unit, cold-storage heat-exchanger, passes through pipeline between liquid air storage tank and forms energy storage air loop regenerative heat exchanger；
The liquid air of the liquid air tank bottom is exported through the cryogenic pump, cold-storage heat-exchanger, regenerative heat exchanger and institute
State the air inlet connection of air expander group, the exhaust outlet of the air expander group is communicated with the atmosphere, with the cryogenic pump into
The pipeline of mouth connection is equipped with control valve, the liquid air storage tank, cryogenic pump, cold-storage heat-exchanger, regenerative heat exchanger, air
The circuit that can do work is released by pipeline formation between expansion unit.
2. heat pump supercritical air energy storage system according to claim 1, it is characterised in that: the heat pump cycle compressor
The air compressor unit power source of group sum is driving motor or wind energy conversion system；It is with routine when the power source is driving motor
Power station trough-electricity, nuclear power, wind-powered electricity generation, solar power generation, water power or tidal power generation are one such or a variety of for power supply.
3. heat pump supercritical air energy storage system according to claim 1, it is characterised in that: the air compressor unit and
Air cleaning and purifier apparatus are also integrated in regenerative heat exchanger.
4. heat pump supercritical air energy storage system according to claim 1, it is characterised in that: the air compressor unit,
Its overall pressure tatio is between 36~340；The air expander group, overall expansion ratio is between 38~340, final stage expander exhaust gas
Close to normal pressure；The heat pump cycle compressor set, overall pressure tatio is between 5~40；The heat pump cycle expands unit, overall expansion
Than between 5~40.
5. heat pump supercritical air energy storage system according to claim 4, it is characterised in that: the air expander group
In, the air inlet of expanding machines at different levels first passes through accumulation of heat/heat exchanger heat temperature raising.
6. heat pump supercritical air energy storage system according to claim 1, it is characterised in that: the air compressor
Group, heat pump cycle compressor set, air expander group and/or heat pump cycle expand unit, using piston type, axial-flow type, centrifugation
Formula, screw or hybrid.
7. heat pump supercritical air energy storage system according to claim 1, it is characterised in that: the air compressor unit,
Air expander group is respectively distributed in a drive shaft or more drive shafts；The heat pump cycle compressor set, heat pump cycle
Expanding machine group is distributed in a drive shaft, or in the more drive shafts by gearbox connection.
8. heat pump supercritical air energy storage system according to claim 1, it is characterised in that: the regenerative heat exchanger and storage
It include the heat exchanger of heat pump cycle gas working medium and compressed air heat exchange in cold heat exchanger, the form of the heat exchanger is tubulation
Formula, fin-tube type, plate-fin or one of board-like or a variety of combination.
9. heat pump supercritical air energy storage system according to claim 1, it is characterised in that: the heat pump supercritical air
Energy-storage system further includes the low temperature heat exchanger of heat pump cycle gas return path and the heat exchange of compressed air heat-exchanging loop, heat exchanger
Form is shell and tube, fin-tube type, plate-fin or board-like one or more combinations.
10. heat pump supercritical air energy storage system according to claim 1, it is characterised in that: the heat pump cycle expansion
The gas outlet of unit successively after the cold side of the cryogenic heat exchanger, cold-storage heat-exchanger with the heat pump cycle compressor set into
Port connection, the gas outlet of the air compressor unit is successively through the regenerative heat exchanger, cold-storage heat-exchanger, cryogenic heat exchanger
After hot side with the liquid air inlet communication of the liquid air tank top.
Priority Applications (1)
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