CN203730075U - Efficient energy storage power generating system - Google Patents
Efficient energy storage power generating system Download PDFInfo
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- CN203730075U CN203730075U CN201420121766.0U CN201420121766U CN203730075U CN 203730075 U CN203730075 U CN 203730075U CN 201420121766 U CN201420121766 U CN 201420121766U CN 203730075 U CN203730075 U CN 203730075U
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Abstract
The utility model discloses an efficient energy storage power generating system. Low-temperature high-pressure gas generated by liquid air through gasification is sent into a gas mixing drainage device (7), the Coanda effect is utilized, other gas in the gas mixing drainage device (7) is driven, and greater airflows are formed and enter an expansion machine (9) to be expanded, so a power generator (10) is driven to generate electricity. The efficient energy storage power generating system has the advantages that the technology of hydromechanics is fully utilized, the liquid air gasification efficiency, the liquid air utilization rate and the environment energy utilization efficiency are greatly improved, and the gas conveying power cost is reduced.
Description
Technical field
The utility model relates to stored energy and the system with the field, particularly a kind of efficient energy storing and electricity generating of the energy generating storing.
Background technique
Research and development, storage and the utilization of new energy is problems that society emphasis solves, and energy storage mode is mainly divided three classes at present: mechanical energy storage, Power Flow, electrochemical energy storage.
Energy storage technology is mainly divided into physics energy storage (as the energy storage of drawing water, compressed-air energy storage, flywheel energy storage etc.), chemical energy storage (as lead-acid battery, redox flow batteries, sodium-sulphur battery, lithium ion battery) and Power Flow (as superconducting magnetic energy storage, ultracapacitor energy storage etc.) three major types.According to the feature of various energy storage technologies, flywheel energy storage, superconducting magnetic energy storage and ultracapacitor energy storage are suitable for the pulse power occasion that need to provide in short-term larger, as tackle voltage dip and instantaneous power-off, raising user's power quality, suppress low-frequency oscillation of electric power system, improve the stability of a system etc., be not suitable for daily electricity consumption; And being suitable for peak-load regulating, large-scale emergency power supply, renewable energy sources, the energy storage of drawing water, compressed-air energy storage and electrochemical cell energy storage extensive, the jumbo application such as be incorporated to.The energy storage of drawing water is limited by geographical conditions restriction, resource limitation and scale, is unsuitable for equally daily electricity consumption; Although electrochemical cell energy storage subject matter is that unit energy storage is large, but in not environmental protection, spreadable life, battery performance decays, holistic cost is high, technology immature, be difficult to large-scale promotion application, 2011 of China Electric Power Research Institute, national wind-light storage transmission demonstration project (first phase) actual motion effect describes the problem; And the energy storage of conventional compression air need to expend a large amount of additional energy source, energy conversion efficiency own can not significantly improve, and only applies in Germany in 1978 and the extensive individual event of the U.S. in 1991, loses and has in the world application again.
At present the most ripe extensive energy storage mode is pumped storage, and it need to be joined and builds two of upstream and downstream reservoir., the water of lower reservoir is extracted into upper pond and preserves in motor working state at load valley period pumped storage equipment, in the time of load peak, equipment, in generator working state, utilizes the water generating being stored in upper pond.Its energy conversion efficiency is in 70% to 75% left and right.But the impact of the factors such as addressing requirement is high owing to being built a station, the construction period is long and dynamic adjustments speed of response is slow, the large-scale promotion application of the energy storage technology that draws water is subject to restriction to a certain extent.At present draw water 9,000 ten thousand kilowatts of energy-accumulating power station total installations of generating capacity of the whole world, account for 3% of global capacity of installed generator.
Compressed-air energy storage is the energy storage mode that another kind can be realized large-scale industrial application.Utilize this energy storage mode, will have more than needed electric energy for driving air compressor in the network load low ebb phase, by air high pressure sealing in cavern, abandoned well and expired Oil/gas Well; Discharge pressurized air in network load peak period and promote gas turbine generating.The features such as efficiency is high owing to having, life-span length, fast response time, and energy conversion efficiency higher (being about 75% left and right), thereby compressed-air energy storage is one of energy storage technology having development potentiality.But limited by geographical conditions.
In recent years, Chinese scholars has developed liquid air energy-storing and power-generating system.In the time of needs stored energy, first liquid air energy-storing and power-generating system compresses and liquefies the air of normal temperature, carries out energy storage; In the time that needs release energy, pressurize by liquid towards atmosphere temperature rising, liquid air is expanded and is produced gas by decompressor, drives generator to generate electricity, and realizes energy output.Liquid air energy-storing and power-generating system is owing to adopting normal pressure liquid air to store, and energy storage density is higher, pollution-free.
But existing liquid air energy-storing and power-generating system is all the mode that adopts heat exchange, be mainly the gas-powered generator acting obtaining after utilizing liquid air to expand, there is the defects such as efficiency is low, system complexity is high, volume is large.
Summary of the invention
The utility model, in order to address the above problem, has designed a kind of high-efficiency energy-storage power generation system.
The purpose of this utility model is for solving the problems such as existing liquid air energy-storing and power-generating system efficiency is low, system complexity is high, volume is large, utilize aerodynamic principle, a kind of high-efficiency energy-storage power generation system is proposed, in energy-storing and power-generating system, increase Jet injector, air amplifier and air-flow and mend entropy intensification parts, make the liquid air gas obtaining that expands, can drive is the gas-powered decompressor acting of its 10 times-100 times, thereby has greatly improved system effectiveness.
Realizing above-mentioned purpose the technical solution of the utility model is:
A kind of high-efficiency energy-storage power generation system, comprises ultralow temperature liquid air liquid container (1), gas mixing drainage device (7), and decompressor (9), generator (10), is characterized in that, described ultralow temperature liquid air liquid container (1), for storing liquid air; Described gas mixing drainage device (7), for utilizing Koln to reach effect, makes the low temperature high pressure gas by generation after liquid air gasification of input, drives other gases of its inside, forms larger air-flow; Described decompressor (9), for expanding to the air-flow of gas mixing drainage device (7) output; Described generator (10), for using the gas-powered generating of expanding through decompressor (9).
Preferably, described system also comprises gas expansion section (20), heat exchanger (21), contraction of gas section (24), described gas expansion section (20), the cross section that is used for the gas that makes input system increases, flow velocity slows down, pressure reduces, and temperature reduces, and after this gas is sent into heat exchanger (21); Described heat exchanger (21), for by the gas concurrent heating of input, heats up, boosts, and after this gas is sent into contraction of gas section (24); Described contraction of gas section (24), reduces for the gas cross section that makes input, and density increases, and pressure increases, and flow velocity increases, and after this gas is sent into gas mixing drainage device (7).
Preferably, described system also comprises ultralow temperature pressure liquid pump (2), jet drainage device (3), high-pressure gasified vaporizer (5), described ultralow temperature pressure liquid pump (2), for pumping the liquid air pressurization of described ultralow temperature liquid air liquid container (1) to jet drainage device (3); Described jet drainage device (3), drives its inner gas flow of input for the liquid air that makes to spray, and forms ultralow temperature high-pressure gas-liquid compounding substances, is delivered to high-pressure gasified vaporizer (5); Described high-pressure gasified vaporizer (5), for gasifying to the ultralow temperature high-pressure gas-liquid compounding substances of input.
Preferably, in described jet drainage device (3), the gas of input is provided by contraction of gas section (24).
Preferably, described system also comprises air filter (11), air liquefying apparatus (13), and described air filter (11), is input to impurity, the moisture of intrasystem gas for filtering; Described air liquefying apparatus (13), for to the weary gas of discharging through decompressor (9) and the 1/100-1/10 that is input to intrasystem gas through air filter (11), liquefies, and produces liquid air; Described gas expansion section (20), also for receiving the weary gas of discharging through decompressor (9) and be input to intrasystem gas through air filter (11), removing the part air that is transported to the rear remainder of air liquefying apparatus (13).
High-efficiency energy-storage power generation system of the present utility model, makes full use of hydromechanical technology, has greatly improved liquid air gasification efficiency, liquid air utilization ratio, environmental energy utilization ratio, has reduced gas transmitting power cost.
Brief description of the drawings
Fig. 1 is the structural representation of high-efficiency energy-storage power generation system described in the utility model;
Fig. 2 is the structural representation of jet drainage device described in the utility model;
Fig. 3 is the structural representation of gas mixing drainage device described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is specifically described.
Fig. 1 is the structural representation of high-efficiency energy-storage power generation system described in the utility model.As shown in the figure, this system comprises ultralow temperature liquid air liquid container 1, it is connected with ultralow temperature pressure liquid pump 2, ultralow temperature pressure liquid pump 2 is connected with jet drainage device 3, jet drainage device 3 is connected with high-pressure gasified vaporizer 5 through ultralow temperature high-pressure gas-liquid mixed pipe line 4, and high-pressure gasified vaporizer 5 is connected with gas mixing drainage device 7 through cryogenic high pressure air pipe line 6.High-pressure gasified vaporizer 5 also has the input 27 of thermal source liquid and thermal source liquid output 28.
Gas mixing drainage device 7 is connected with decompressor 9 through normal temperature high pressure airline 8, and decompressor 9 is connected with generator 10.The gas that the weary gas of decompressor 9 outlet valve outputs and air filter 11 are inputted is by blast pipe road 12, and small part is sent to air liquefying apparatus 13, and remaining major part is sent to gas expansion section 20.Gas expansion section 20 is connected with heat exchanger 21, and heat exchanger 21 is connected with contraction of gas section 24, and the gas in contraction of gas section 24 is sent to gas mixing drainage device 7 equally, meanwhile, is also sent to jet drainage device 3 by pipeline 29.Heat exchanger 21 also has heat source medium input 22 and heat source medium output 23.
Air liquefying apparatus 13 has cooling working medium input 16 and cooling working medium output 30, and cooling working medium output 30 is connected with compressor 31, and compressor 31 is connected with condenser 18, and condenser 18 is stored in heat in heat storage can 19.Heat storage can 19 also has heat-storage medium input 25 and heat-storage medium output 26.Condenser is connected with cooling working medium input 16 through expansion throttling valve 17.
Liquefied air output 14 is connected with ultralow temperature low pressure liquid pump 15, and ultralow temperature low pressure liquid pump 15 is connected with ultralow temperature liquid air liquid container 1.
The working procedure of described high-efficiency energy-storage power generation system is described below:
First, liquid air is drawn out of from ultralow temperature liquid air liquid container 1, be forced into 10MPa-60MPa through ultralow temperature pressure liquid pump 2, highly pressurised liquid is by jet drainage device 3, produce the fluid of gas-liquid mixed, high speed and high pressure injection, carry by ultralow temperature high-pressure gas-liquid mixed pipe line 4, enter high-pressure gasified vaporizer 5.High-pressure gasified vaporizer 5 makes gas continue to heat up by thermal source liquid input 27 amount of heats that bring, and forms high-pressure gasified gas.High-pressure gasified vaporizer 5 can use the thermal source of various high-energy-densities, and simultaneously thermal source liquid output 28 is very suitable for exporting cold, can need for system or other place of cold.
After this, high-pressure gasified gas, through cryogenic high pressure air pipe line 6, arrives gas mixing drainage device 7.In gas mixing drainage device 7, through vacuumizing and pressurize the effect mixing, the gas at normal temperature that a small amount of high pressure low temperature air-flow of being inputted by cryogenic high pressure air pipe line 6 drives contraction of gas section 24 to input, forms larger air-flow and transports to decompressor 9.The coaxial output of decompressor 9 drives generator 10 to generate electricity, output electric energy.Decompressor 9 can adopt steam turbine, internal-combustion engine etc. to realize to expand acting to be converted into the various device of power.
Because jet drainage device 3 and gas mixing drainage device 7 can drive the air current flow of several 10 times, make the gas pressure in normal temperature high voltage air pipe line 8 reach 2MPa-5MPa, the decompressor 9 of pressing in can driving more efficiently does work.
Gas gross in whole system is dynamic change.Air filter 11 not only can be realized the effect of filtering dust, moisture, can also realize the effect of bidirectional modulation gas gross.In the time that loine pressure is greater than external pressure, it realizes the effect of exhaust; In the time that the pressure of pipeline is less than external pressure, it realizes the effect of air inlet.In the time preparing liquid air, the gas flow of internal system produces and consumes, just need to be from extraneous make-up gas; And output is when energy, because the part parts of preparing liquid air are shut down, the gas that liquid air is released generation can generate electricity time progressively increases; can produce a large amount of gas; in addition constantly have gas make-up to enter system, therefore, too much gas just need to be discharged through air filter 11.
Blast pipe road 12 works in ambient pressure, or is slightly less than ambient pressure, and the air in its pipeline is clean, there is no moisture, can be for recycling, and one of percentage wherein transported to air liquefying apparatus 13 to 1/10th gas.Air liquefying apparatus 13 is products of industrial maturation, be liquid air for air compressing that conveying is come, cooling, liquefaction, it needs cooling working medium input 16 that cold is provided, and is taken away by cooling working medium output 30 preparing the heat that liquid air produces simultaneously.Cooling working medium is through compressor 31, condenser 18, and release heat, is stored in heat storage can 19 heat.Heat storage can 19 is cool-bags, can be with pure water as working medium.And heat-storage medium input 25, heat-storage medium output 26 can be used for absorbing heat energy when exporting.The liquefied air that air liquefying apparatus 13 produces is exported by liquefied air output 14, and is pumped in ultralow temperature liquid air liquid container 1 and stored by ultralow temperature low pressure liquid pump 15.
Gas in blast pipe road 12, only has one of percentage to be transported to air liquefying apparatus 13 to 1/10th part, and remaining most of gas enters gas expansion section 20.The gas of Pipeline transport, through gas expansion section 20, heat exchanger 21, contraction of gas section 24, completes the decrease temperature and pressure that first expands, then is beneficial to environment thermal energy and mends entropy, finally shrinks the process of supercharging acting, and the air-flow in Aerodynamics is mended entropy temperature-rise period.When gas enters gas expansion section 20, the cross section of gas increases, and flow velocity slows down, and pressure reduces, and temperature reduces.Then gas enters concurrent heating in heat exchanger 21, heats up, boosts, and by heat source medium input 22, the heat of low temperature in environment is passed to gas mobile in heat exchanger 21.Along with heat exchange progressively completes, gas arrives contraction of gas section 24, has reached the maximum temperature that can realize, between-5 DEG C to 50 DEG C.This temperature depends on the height of heat source medium temperature.Heat source medium can be gas, can be also liquid.Gas enters after contraction of gas section 24, and the cross section of gas reduces, and density increases, pressure increases, flow velocity increases.This gas that carries heat enters in gas mixing drainage device 7, the low temperature high pressure gas of carrying with cryogenic high pressure air pipe line 6 mixes, produced the high as far as possible gas flow of temperature, the pressure of air-flow reaches 2-5MPa, works thereby promote more efficiently decompressor 9.
Gas in contraction of gas section 24 is also sent to jet drainage device 3 by pipeline 29.The pressure maximum that contraction of gas section 24 can provide system to utilize ambient temperature to produce, the air that temperature is the highest, thus be more conducive to that jet drainage device 3 produces at a high speed, the gas-liquid mixed material of high pressure.In addition, what inject due to contraction of gas section 24 is pure air, and moisture is less, can also avoid forming the situation of the frosting of freezing in jet drainage device 3.
Fig. 2 is the structural representation of jet drainage device 3 described in the utility model.As shown in the figure, described jet drainage device 3 comprises high-pressure spray input 34, high-pressure spray jet pipe 35, high-pressure gas-liquid mixing cavity 36.Jet drainage device 3 utilizes the principle of Jet injector to realize, ultralow temperature high-pressure service pump 2 makes the liquid air fluid of high pressure be entered in jet drainage device 3 by high-pressure spray input 34, in high-pressure spray jet pipe 35 place's high velocity jet, because injection has produced the effect that is equivalent to vacuumize, the medium that can adsorb periphery moves together, and the medium of periphery is the air of being inputted by pipeline 29 here.The air of jet and drive thereof fully mixes in high-pressure gas-liquid mixing cavity 36, has formed ultralow temperature high-pressure gas-liquid compounding substances, is input to high-pressure gasified vaporizer 5 realizes gasification through ultralow temperature high-pressure gas-liquid mixed pipe line 4.Because described jet drainage device 3 can drive 3-5 air current flow doubly, make part exhaust be mixed into high-pressure gasified vaporizer 5, what import is heat energy and pure gas, being conducive to high-pressure gasified vaporizer 5 works, make liquid air be gasificated into immediately ultralow temperature gas, improve gasification efficiency, be convenient to high-pressure gasified vaporizer 5 follow-up works.
Fig. 3 is the structural representation of gas mixing drainage device 7 described in the utility model.As shown in the figure, described gas mixing drainage device 7 inside comprise pressurized gas spout 33, cryogenic high pressure air pipe line 6 is its pressurized gas inlet openings, and contraction of gas section 24 is its gas input ports for the treatment of the relatively low pressure of drainage, and normal temperature high voltage air pipe line 8 is the delivery outlet of air after mixing.Gas mixing drainage device 7 essence are air amplifiers, when the high speed and high pressure gas of being inputted by cryogenic high pressure air pipe line 6 is in the time that pressurized gas spout 33 sprays, the effect that formation vacuumizes, the gas that can drive contraction of gas section 24 to input together advances, reach effect according to Koln, the gas being ejected on the attached wall of described gas mixing drainage device 7 also can drive gas around to move together.Different according to the mode of the shape of spout and laying, the theoretical gas that can produce maximum 30 times amplifies induced effect.In described gas mixing drainage device 7, the high-temperature gas that a small amount of high pressure low temperature air-flow of being inputted by cryogenic high pressure air pipe line 6 drives contraction of gas section 24 to input, form larger air-flow, thereby mix and heat up better, produce the high as far as possible gas flow of temperature, the pressure of air-flow reaches 2-5MPa, is more conducive to gas and enters decompressor expansion acting, has improved the utilization ratio of liquid air.
Existing liquid air energy-storing and power-generating system, need to all become liquid the weary gas using, and then in next one circulation, the gas that only utilizes liquid air gasification the to produce acting of expanding, realizes energy and export.In the utility model, due to by fluid mechanics, weary gas that need not handle uses as existing system all becomes liquid, enters next work cycle but only one of percentage need to be become to liquid to 1/10th gas again.In next work cycle, one of this percentage, to 1/10th air that are liquefied, is vaporized again, but but can drive 10-100 gas flow doubly, this more substantial air-flow, temperature is higher, pressure is larger, has greatly improved the efficiency of whole system expansion acting.And the process of above-mentioned raising liquid air gasification efficiency, liquid air utilization ratio, utilize hydromechanical principle to realize completely, do not consume electric energy, take full advantage of amount of heat, environmental energy utilization ratio is also further improved.
Technique scheme has only embodied the optimal technical scheme of technical solutions of the utility model; those skilled in the art have all embodied principle of the present utility model to some variations that wherein some part may be made, within belonging to protection domain of the present utility model.
Claims (5)
1. a high-efficiency energy-storage power generation system, comprises ultralow temperature liquid air liquid container (1), gas mixing drainage device (7), and decompressor (9), generator (10), is characterized in that,
Described ultralow temperature liquid air liquid container (1), for storing liquid air;
Described gas mixing drainage device (7), for utilizing Koln to reach effect, makes the low temperature high pressure gas by generation after liquid air gasification of input, drives other gases of its inside, forms larger air-flow;
Described decompressor (9), for expanding to the air-flow of gas mixing drainage device (7) output;
Described generator (10), for using the gas-powered generating of expanding through decompressor (9).
2. system according to claim 1, is characterized in that, described system also comprises gas expansion section (20), heat exchanger (21), contraction of gas section (24),
Described gas expansion section (20), for make input system gas cross section increase, flow velocity slows down, pressure reduces, temperature reduce, after this gas is sent into heat exchanger (21);
Described heat exchanger (21), for by the gas concurrent heating of input, heats up, boosts, and after this gas is sent into contraction of gas section (24);
Described contraction of gas section (24), reduces for the gas cross section that makes input, and density increases, and pressure increases, and flow velocity increases, and after this gas is sent into gas mixing drainage device (7).
3. system according to claim 2, is characterized in that, described system also comprises ultralow temperature pressure liquid pump (2), jet drainage device (3), high-pressure gasified vaporizer (5),
Described ultralow temperature pressure liquid pump (2), for pumping the liquid air pressurization of described ultralow temperature liquid air liquid container (1) to jet drainage device (3);
Described jet drainage device (3), drives its inner gas flow of input for the liquid air that makes to spray, and forms ultralow temperature high-pressure gas-liquid compounding substances, is delivered to high-pressure gasified vaporizer (5);
Described high-pressure gasified vaporizer (5), for gasifying to the ultralow temperature high-pressure gas-liquid compounding substances of input.
4. system according to claim 3, is characterized in that, in described jet drainage device (3), the gas of input is provided by contraction of gas section (24).
5. system according to claim 2, is characterized in that, described system also comprises air filter (11), air liquefying apparatus (13),
Described air filter (11), is input to impurity, the moisture of intrasystem gas for filtering;
Described air liquefying apparatus (13), for to the weary gas of discharging through decompressor (9) and the small part that is input to intrasystem gas through air filter (11), liquefies, and produces liquid air;
Described gas expansion section (20), also for receiving the weary gas of discharging through decompressor (9) and be input to intrasystem gas through air filter (11), removing the most of air that is transported to the rear remainder of air liquefying apparatus (13).
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| CN201420121766.0U CN203730075U (en) | 2014-03-19 | 2014-03-19 | Efficient energy storage power generating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835766A (en) * | 2014-03-19 | 2014-06-04 | 苟仲武 | Efficient energy-saving power generation method and system |
| CN107732269A (en) * | 2017-11-27 | 2018-02-23 | 大连热电新能源应用技术研究院有限公司 | The residual neat recovering system and all-vanadium flow battery cooling means of all-vanadium flow battery |
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2014
- 2014-03-19 CN CN201420121766.0U patent/CN203730075U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835766A (en) * | 2014-03-19 | 2014-06-04 | 苟仲武 | Efficient energy-saving power generation method and system |
| CN107732269A (en) * | 2017-11-27 | 2018-02-23 | 大连热电新能源应用技术研究院有限公司 | The residual neat recovering system and all-vanadium flow battery cooling means of all-vanadium flow battery |
| CN107732269B (en) * | 2017-11-27 | 2023-07-04 | 大连热电新能源应用技术研究院有限公司 | Waste heat recovery system of all-vanadium redox flow battery and cooling method of all-vanadium redox flow battery |
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