CN106703916A - Heat-insulating compressed air energy storage system achieving humidifying and enthalpy increasing in non-throttling mode - Google Patents
Heat-insulating compressed air energy storage system achieving humidifying and enthalpy increasing in non-throttling mode Download PDFInfo
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- CN106703916A CN106703916A CN201710133395.6A CN201710133395A CN106703916A CN 106703916 A CN106703916 A CN 106703916A CN 201710133395 A CN201710133395 A CN 201710133395A CN 106703916 A CN106703916 A CN 106703916A
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- heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K21/00—Steam engine plants not otherwise provided for
- F01K21/04—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas
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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
- F22B3/04—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators
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- General Engineering & Computer Science (AREA)
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a heat-insulating compressed air energy storage system achieving humidifying and enthalpy increasing in a non-throttling mode. The heat-insulating compressed air energy storage system comprises an air compressor, an air heat exchanger, a heat storage device, an air storage chamber, a feed water heater and an ejection flash evaporator. An outlet of the air compressor is connected with an inlet of the air heat exchanger through a pipeline, an outlet of the air heat exchanger is connected with an air side inlet of the heat storage device through a pipeline, an air side outlet of the heat storage device is connected with an inlet of the air storage chamber through a pipeline, and an outlet of the air storage chamber is connected with a working nozzle of the ejection flash evaporator; and an ejection flash tube of the ejection flash evaporator is connected with a water source through the feed water heater, an outlet of the ejection flash evaporator is connected with an inlet of the heat storage device through a pipeline, and an outlet of the heat storage device is connected with a turbine. Based on ejection and flash principles, a mixed working medium is depressurized through the mode that compressed air is mixed with high-temperature water or vapor, throttling loss caused by a traditional throttling depressurization valve is avoided, and the output power of a system is increased.
Description
Technical field
The present invention relates to heat energy power-generating technical field, more particularly to a kind of adiabatic compression air of un-throttled humidification increasing enthalpy
Energy-storage system.
Background technology
Currently, electricity needs sustainable growth, renewable energy power generation portion increases year by year, and due to regenerative resource
Increasing in the presence of intrinsic intermittent shortcoming, and the electricity consumption peak-valley difference of user side, these problems make peak load regulation network problem ten
Divide protrusion, development energy storage technology can effectively stabilize the fluctuation of network load peak valley.
Compressed-air energy storage power station has that energy storage efficiency is high, unit energy storage power low cost and other advantages, be adapted to it is extensive
One of electricity storage technology means.The groundwork flow of traditional compressed-air energy-storage system is：In thermal energy storage process is inflated,
Motor drives compressor work, and after compressor increasing temperature and pressure, the compressed air of HTHP is fed to storage to atmospheric air
In thermal, the heat of compression of compressed air absorbs accumulation of heat by heat-storing device, through the compressed air quilt after heat-storing device heat exchange cooling
It is sent to gas storage indoor storage；In deflation exoergic process, compressed air is released from air storage chamber, and compressed air is first
It is depressured by reducing pressure by regulating flow valve throttle, then enters in heat-storing device and absorb the heat of compression of the storage in heat-storing device, finally
Compressed air after being heated is admitted to turbine acting again, so that drive generator operation to generate electricity, so as to complete deflation and release and can send out
Electric process.
Above-mentioned traditional scheme needs to install the air pressure that reducing pressure by regulating flow Valve controlling enters turbine in reservoir outlet, from
And ensure the stabilization of turbine admission pressure.But the presence of reducing pressure by regulating flow valve also causes that compressed air is generated in pressure reduction
Very big restriction loss.And in deflation exoergic process, with the continuous reduction of air storage chamber compressed air pressure, air storage chamber
The temperature of compressed air also declines therewith, so that the compressed air temperature of reservoir outlet is consequently also constantly reduced；With this
Meanwhile, compressed air is by after reducing pressure by regulating flow valve throttle, the temperature of compressed air is also further reduced.Two kinds of factor superpositions,
Ultimately resulting in turbine import compressed air temperature reduces obvious, and restriction loss is also huger, and the acting ability of working medium shows
Write and decline.And turbine-inlet temperature reduction, turbine power drop can be made, to ensure turbine power stability, it is necessary to improve do therewith
The flow of work(working medium, opens the aperture of big reducing pressure by regulating flow valve, so that turbine admission pressure is improved, this will aggravate turbine import
Fluid properties it is unstable, ultimately cause the unstable of operating turbine operating mode.
The content of the invention
The adiabatic compression air energy storage systems of the increasing enthalpy that is humidified it is an object of the invention to provide a kind of un-throttled, for existing pressure
The drawbacks of contracting air energy storage systems, turbine intake condition is controlled using un-throttled step-down mode, make turbine import fluid properties shape
State stabilization, so as to ensure the safe and stable operation of turbine.
To achieve the above object, the invention provides following technical scheme：
A kind of adiabatic compression air energy storage systems of the increasing enthalpy that is humidified the invention provides un-throttled, including compressor, air
Heat exchanger, heat-storing device, air storage chamber and injection flash vessel；The blower outlet passes through pipeline with the air heat exchanger import
Connection, air heat exchanger outlet is connected with heat-storing device gas side entrance by pipeline, the heat-storing device gas side outlet and
The gas storage chamber inlet is connected by the road, and the reservoir outlet connects the main jet of the injection flash vessel, the injection
The injection flash pipe of flash vessel is connected by feed-water heater with water source, outlet and the heat-storing device import of the injection flash vessel
Connected by pipeline, heat-storing device outlet is connected with turbine；
The injection flash vessel also includes suction chamber and anemostat, and the suction chamber is connected by trunnion with the anemostat
Logical, the work shower nozzle is arranged in the suction chamber, and the suction chamber is sequentially connected the trunnion and the anemostat, described
Injection flash pipe is connected by pipeline with the sidepiece of the suction chamber.
Preferably, the anemostat is connected by pipeline with the heat-storing device import, and the suction chamber is cavity structure,
The main jet is deep into the suction chamber inner chamber from the suction chamber top；
Preferably, the end of the main jet is provided with adjustable nozzle leaf grating, and the trunnion back segment is Collapsible structure, institute
The outlet for stating anemostat is provided with adjustable nozzle ring；
Preferably, the injection flash pipe is the adjustable cavity structure of flow, and the outlet of the injection flash pipe is along institute
State suction chamber sides tapered into the inner chamber of suction chamber；
Preferably, the compressor is for single-stage compressor or with intercooled multistage compressor；
Preferably, the turbine is single stage turbine or the multistage turbine with resuperheat；
Preferably, one kind that the thermal source of the feed-water heater can be provided for solar energy, industrial exhaust heat and biomass energy
Or several low-grade heat sources；
Preferably, the thermal source of the feed-water heater is to abandon the thermal source that wind-powered electricity generation or rear night letter are provided.
The present invention achieves following technique effect in terms of existing technologies：
1st, system of the present invention controls turbine intake condition using un-throttled step-down mode, is damaged so as to avoid throttling
Lose, based on injection and flash principle, the mode mixed with high-temperature water or vapor using compressed air makes mixed working fluid pressure drop
It is low, it is to avoid the restriction loss that conventionally employed reducing pressure by regulating flow valve step-down is caused, improve the thermal efficiency of system.
2nd, in the adiabatic compression air energy storage systems of un-throttled humidification increasing enthalpy of the present invention, the compression of air storage chamber discharge
Air is directly mixed by way of injection and flash distillation with high-temperature water or vapor by heating, and mixed working medium is by heat accumulation
After the intensification of device, now the mixed working fluid of HTHP does work into turbine, and the acting ability of unit volume working medium is significantly high
Compressed air under traditional mutually synthermal, pressure parameter, therefore, significantly increase the quality stream of unit interval acting working medium
Amount, improves the single-machine capacity of turbine.
3rd, system acting working medium of the present invention improves gas unit using compressed air and the mixed gas of vapor
The acting ability of volume working medium so that the turbine volume under identical generated output is substantially reduced, and unit power construction cost is remarkably decreased.
4th, the injection flash vessel that system of the present invention is used has flexible regulatory function, can be according to the difference of operating mode
Adjustment self structure, realizes flow, pressure, the isoparametric synergic adjustment of humidity of mixed working fluid, to meet the change of whole system
Duty requirements.
5th, the adiabatic compression air energy storage systems of un-throttled humidification increasing enthalpy of the present invention can effectively utilize solar energy, work
The low-grade heat sources such as amateurish heat, biomass energy, it is also possible to by the use of abandon thermal source that the other forms such as wind-powered electricity generation or rear night letter provide as
The energy source of feed-water heater, improves the utilization rate of the energy.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing for needing to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the adiabatic compression air energy storage systems overall schematic of embodiment of the present invention un-throttled humidification increasing enthalpy；
Fig. 2 is that the injection flash vessel of the adiabatic compression air energy storage systems of embodiment of the present invention un-throttled humidification increasing enthalpy is illustrated
Figure；
Wherein, 1- motor, 2- compressors, 3- air heat exchangers, 4- heat-storing devices, 5- air storage chambers, 6- feed-water heaters,
7- injections flash vessel, 7-1- main jets, 7-2- suction chambers, 7-3- anemostats, 7-4- injections flash pipe, 8- turbines, 9- generate electricity
Machine.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The adiabatic compression air energy storage systems of the increasing enthalpy that is humidified it is an object of the invention to provide a kind of un-throttled, for existing pressure
The drawbacks of contracting air energy storage systems, turbine intake condition is controlled using un-throttled step-down mode, make turbine import fluid properties shape
State stabilization, so as to ensure the safe and stable operation of turbine.
It is below in conjunction with the accompanying drawings and specific real to enable the above objects, features and advantages of the present invention more obvious understandable
The present invention is further detailed explanation to apply mode.
Embodiment one：
As shown in Figure 1-2, by taking compressed-air energy storage power station as an example, be humidified the present embodiment increasing enthalpy to un-throttled of the invention
The concrete structure and operation principle of adiabatic compression air energy storage systems are described in detail.
As shown in figure 1, a kind of adiabatic compression air energy storage systems of un-throttled humidification increasing enthalpy are present embodiments provided, including
Motor 1, compressor 2, air heat exchanger 3, heat-storing device 4, air storage chamber 5, feed-water heater 6 and injection flash vessel 7, turbine 8,
Generator 9；The compressor 2 is exported and is connected by pipeline with the import of the air heat exchanger 3, and the air heat exchanger 3 is exported
It is connected by pipeline with the gas side entrance of heat-storing device 4, the gas side outlet of the heat-storing device 4 is with the entrance of the air storage chamber 5 by the road
Connection, the main jet 7-1 of the outlet connection injection flash vessel 7 of the air storage chamber 5, the injection of the injection flash vessel 7 dodges
Steam pipe 7-4 to be connected with water source by feed-water heater 6, outlet and the import of heat-storing device 4 of the injection flash vessel 7 pass through pipeline
Connection, heat-storing device 4 is exported and is connected with the turbine 8；
As shown in Fig. 2 the injection flash vessel 7 also includes that suction chamber 7-2 and anemostat 7-3, the suction chamber 7-2 pass through
Trunnion is connected with the anemostat 7-3, and the work shower nozzle is arranged in the suction chamber 7-2, and the suction chamber 7-2 is cavity
Structure, the main jet 7-1 is deep into the suction chamber 7-2 inner chambers, the suction chamber 7-2 from the suction chamber 7-2 tops
The trunnion and the anemostat 7-3 are sequentially connected, the anemostat 7-3 is connected by pipeline with the import of the heat-storing device 4,
The injection flash pipe 7-4 is connected by pipeline with the sidepiece of the suction chamber 7-2, and the injection flash pipe 7-4 can for flow
The cavity structure of tune, the outlet of the injection flash pipe 7-4 enters suction chamber 7-2's along the suction chamber 7-2 sides tapereds
Inner chamber.
The end of the main jet 7-1 is provided with adjustable nozzle leaf grating, is overlapped between the blade of the adjustable nozzle leaf grating
Connection, it is ensured that working fluid only flows vertically, is shunk by adjustment work nozzle 7-1 end grids and expands to change contraction
Half-angle, to realize different duty requirements；The trunnion back segment is Collapsible structure, and the trunnion back segment Collapsible structure can be real
The regulation of existing length of throat；The outlet of the anemostat 7-3 is provided with adjustable nozzle ring, and the adjustable nozzle ring is cyclic structure, blade
Between overlap connection, it is ensured that working fluid only flow vertically, by adjust anemostat 7-3 adjustable nozzle ring automatically expansion and receive
The angle of flare and diffusion cross section diameter contracted to change anemostat 7-3, the working condition requirement different to adapt to scene.
Using the electrical energy drive motor 1 of power plant's low power consumption in the present embodiment, and then motor 1 drives compressor 2 to press
Contracting air, the motor 1 is coupled by power transmission shaft with the compressor 2；Compressor 2 is that single-stage compressor 2 or band are middle cold
But multistage compressor 2；Turbine 8 is single stage turbine 8 or the multistage turbine 8 with resuperheat.Difference choosing according to actual conditions
Select the species of corresponding compressor 2 and turbine 8.
The thermal source of feed-water heater 6 is one or more low product of solar energy, industrial exhaust heat, biomass energy in the present embodiment
Position thermal source, or abandon the other forms such as wind-powered electricity generation or rear night letter offer thermal source, above-mentioned several thermals source are used as feed-water heater 6
Energy source, improve the utilization rate of the energy.
The adiabatic compression air energy storage systems of the un-throttled humidification increasing enthalpy of the present embodiment work in compressed-air energy storage power station
Make engineering and operation principle is：
External water source is heated into feed-water heater 6, and the heat source of feed-water heater 6 can include diversified forms, such as
The low-grade heat sources such as solar energy, industrial exhaust heat, biomass energy；Compressed air from the release of air storage chamber 5 is by injection flash vessel 7
Main jet 7-1 enters injection flash vessel 7, hot water the drawing in the compressed air of injection flash vessel 7 from after the heating of feed-water heater 6
It is inhaled into the injection flash pipe 7-4 of injection flash vessel 7 under the effect of penetrating, two fluids is sufficiently mixed in injection flash vessel 7, complete
Into mass-energy exchange process；By adjusting the varistructure of injection flash vessel 7, the ginseng such as pressure, temperature, flow of fluid-mixing is controlled
Number meets the job requirement of turbine 8；Mixed working fluid enters heat-storing device 4 by connecting line, the compression stored using heat-storing device 4
Heat is heated to mixed working fluid, the temperature of mixed working fluid is further improved, so as to improve the acting ability of mixed working fluid unit volume；
Mixed working fluid from after the heat absorption intensification of heat-storing device 4 is done work by connecting line into turbine 8, and turbine 8 is coaxial with generator 9
Connect, drive generator 9 to work, complete the deflation exoergic process of the adiabatic compression air energy storage systems of un-throttled humidification increasing enthalpy.
Adjusted according to theory, system of the present invention avoids the section that conventionally employed Valve controlling turbine admission pressure is produced
Stream loss, air storage chamber discharge temperature be 25 DEG C, blow off pressure be 10MPa when, controlled than conventionally employed valve regulated mode
The compressed-air energy-storage system efficiency high about 10% of flat admission pressure, unit mass compressed air output electric energy lifts about 10 times,
Energy-saving effect clearly and can be greatly reduced turbine size, reduce system cost.
It should be noted that the adiabatic compression air energy storage systems of the un-throttled humidification increasing enthalpy of the present embodiment are not limited to this
A kind of invention, the adiabatic compression air energy storage systems of the increasing enthalpy that is humidified the present invention is to provide un-throttled are former using injection and flash distillation
Reason, effective object is the electric energy of natural energy such as heat energy, water energy, wind energy or power station low ebb, by these energy by pressure
Mechanism of qi does work, and then energy is switched into compressed air and heat energy is separately stored in air storage chamber and heat-storing device, complete pairing energy
Storage；During the release of energy by injection flash vessel of the invention unique compressed air is carried out working medium mixing and
Heating, the output pressure of the structure control mixed working fluid by adjusting injection flash vessel, and then released energy by turbine acting
Run out, done work the usual manner for generating electricity simply in compressed-air energy storage power station by turbine to generator in the present embodiment,
But be not restricted to that of the invention.As long as utilizing the traditional section of the equipment replacement of injection principle in the exoergic process of compressed air
Stream valve belongs to protection scope of the present invention.
Specific case is applied in the present invention to be set forth principle of the invention and implementation method, above example
Illustrate that being only intended to help understands the method for the present invention and its core concept；Simultaneously for those of ordinary skill in the art, according to
According to thought of the invention, will change in specific embodiments and applications.In sum, this specification content
Should not be construed as limiting the invention.
Claims (8)
1. a kind of un-throttled is humidified the adiabatic compression air energy storage systems of increasing enthalpy, it is characterised in that including compressor, air heat-exchange
Device, heat-storing device, air storage chamber, feed-water heater and injection flash vessel；The blower outlet and the air heat exchanger import
Connected by pipeline, the air heat exchanger outlet is connected with heat-storing device gas side entrance by pipeline, the heat-storing device gas
Side outlet is connected by the road with the gas storage chamber inlet, and the reservoir outlet connects the main jet of the injection flash vessel,
The injection flash pipe of the injection flash vessel is connected by feed-water heater with water source, the outlet of the injection flash vessel and heat accumulation
Device import is connected by pipeline, and heat-storing device outlet is connected with turbine；
The injection flash vessel also includes suction chamber and anemostat, and the suction chamber is connected by trunnion with the anemostat, institute
State work shower nozzle to be arranged in the suction chamber, the suction chamber is sequentially connected the trunnion and the anemostat, the injection
Flash pipe is connected by pipeline with the sidepiece of the suction chamber.
2. un-throttled according to claim 1 is humidified the adiabatic compression air energy storage systems of increasing enthalpy, it is characterised in that described
Anemostat is connected by pipeline with the heat-storing device import, and the suction chamber is cavity structure, and the main jet is from described
Suction chamber top is deep into the suction chamber inner chamber.
3. un-throttled according to claim 1 is humidified the adiabatic compression air energy storage systems of increasing enthalpy, it is characterised in that described
The end of main jet is provided with adjustable nozzle leaf grating, and the trunnion back segment is Collapsible structure, and the outlet of the anemostat is provided with
Adjustable nozzle ring.
4. un-throttled according to claim 1 is humidified the adiabatic compression air energy storage systems of increasing enthalpy, it is characterised in that described
Injection flash pipe is the adjustable cavity structure of flow, and the outlet of the injection flash pipe enters along the suction chamber sides tapered
The inner chamber of suction chamber.
5. un-throttled according to claim 1 is humidified the adiabatic compression air energy storage systems of increasing enthalpy, it is characterised in that described
Compressor is for single-stage compressor or with intercooled multistage compressor.
6. un-throttled according to claim 1 is humidified the adiabatic compression air energy storage systems of increasing enthalpy, it is characterised in that described
Turbine is single stage turbine or the multistage turbine with resuperheat.
7. un-throttled according to claim 1 is humidified the adiabatic compression air energy storage systems of increasing enthalpy, it is characterised in that described
One or more low-grade heat sources that the thermal source of feed-water heater is solar energy, industrial exhaust heat and biomass energy are provided.
8. un-throttled according to claim 1 is humidified the adiabatic compression air energy storage systems of increasing enthalpy, it is characterised in that described
The thermal source of feed-water heater is to abandon the thermal source that wind-powered electricity generation or rear night letter are provided.
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