CN109185853A - A kind of list tank heat-accumulation type hot energy-accumulating power station system - Google Patents
A kind of list tank heat-accumulation type hot energy-accumulating power station system Download PDFInfo
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- CN109185853A CN109185853A CN201811209802.8A CN201811209802A CN109185853A CN 109185853 A CN109185853 A CN 109185853A CN 201811209802 A CN201811209802 A CN 201811209802A CN 109185853 A CN109185853 A CN 109185853A
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- 238000009825 accumulation Methods 0.000 title claims abstract description 32
- 238000004146 energy storage Methods 0.000 claims abstract description 37
- 238000002485 combustion reaction Methods 0.000 claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000010248 power generation Methods 0.000 claims description 8
- 239000002737 fuel gas Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 50
- 238000005338 heat storage Methods 0.000 description 22
- 230000005611 electricity Effects 0.000 description 17
- 238000010438 heat treatment Methods 0.000 description 11
- 238000005485 electric heating Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 241001212038 Arcola Species 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 208000021760 high fever Diseases 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
- F22B33/185—Combinations of steam boilers with other apparatus in combination with a steam accumulator
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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
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
-
- 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
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A kind of list tank heat-accumulation type hot energy-accumulating power station system, be related to electric energy provisioning technique field, the present invention be solves the problems, such as when loss of power system is unable to run low reliability, double tank energy storage device material utilization amounts at high cost, power grid non-" peak " period greatly and Turbo-generator Set is not run hot energy-accumulating power station can not heat supply and hot energy-accumulating power station system effectiveness it is low；Including medium reservoirs, cold medium pump, thermal medium pump, electric heater, combustion heater, steam generator, electric tracing stick I, electric tracing stick II, steam turbine high-pressure cylinder, reheater, steam turbine mesolow cylinder, generator, condenser, condensate pump, heater I, oxygen-eliminating device, feed pump, heater II and cooling tower；Invention increases the source of an energy, reliability improves 100%；The relatively double tank energy storage device material utilization amounts of single medium reservoirs significantly reduce so as to effectively reduce cost, while occupied area is smaller convenient for arrangement；Purposes of the present invention is energy storage and power supply.
Description
Technical field
The present invention relates to electric energy provisioning technique fields, are in particular a kind of single tank heat-accumulation type hot energy-accumulating power station technologies.
Background technique
Energy conversion can simultaneously be carried out energy storage by certain mode by hot energy-accumulating power station simultaneously, and steam passes through steam turbine and does work
Afterwards, then to heat user it exports.By energy-accumulating power station can auxiliary heat supplying power station to user carry out function, solve concentrated supply of heating in the city
The problem of, instead of arcola in full flourish.Again from improving social whole energy utilization rate on the other hand.
The document of entitled " independent fused salt accumulation of heat power station technology and its evaluation " be solve renewable energy power generation intermittence,
Unstability and power grid " trough-electricity " problem, by the way that dump energy to be switched to the advantage of energy heats fused salt and heat accumulation, low product
Matter electric power is converted into generating high-quality electric power, realizes the consumption to dump energy.
Have a disadvantage in that: if 1. power supply power supplies or electric heating relevant device failure will lead to system can not heat accumulation, hair
The reliability of electricity can not ensure；2. pair tank energy storage is big compared with material utilization amount, at high cost, take up a large area, is unfavorable for arranging；3. system
Efficiency has to be hoisted.
Summary of the invention
The present invention is to solve loss of power system to be unable to run that reliability is low, double tank energy storage device material utilization amounts are at high cost greatly
And take up a large area be unfavorable for arrangement and hot energy-accumulating power station system effectiveness have problem to be hoisted.
To achieve the above object, the present invention provides a kind of single tank heat-accumulation type hot energy-accumulating power station system, the list tank heat accumulating types
Hot energy-accumulating power station system includes medium reservoirs 1, cold medium pump 2, thermal medium pump 3, electric heater 4, combustion heater 5, steam hair
Raw device 6, electric tracing stick I 7, electric tracing stick II 8, steam turbine high-pressure cylinder 9, reheater 10, steam turbine mesolow cylinder 11, generator
12, condenser 13, condensate pump 14, heater I 15, oxygen-eliminating device 16, feed pump 17, heater II 18 and cooling tower 19；
The electric heater 4 is provided with power supply 4-1, the power output end of power supply 4-1 and the power input of electric heater 4
End connection；The combustion heater 5 is provided with fuel gas supply equipment 5-1, the energy output end of fuel gas supply equipment 5-1 and combustion
The energy input end of hot-air heater 4 connects；The medium reservoirs 1 include thermal medium layer 1-1, mesolimnion 1-2 and cold medium layer
1-3, thermal medium layer 1-1, the mesolimnion 1-2 and cold medium layer 1-3 successively vertical distribution in the inside of medium reservoirs 1, institute
Thermal medium layer 1-1, mesolimnion 1-2 and the cold medium layer 1-3 stated is by the solid of medium reservoirs 1, the thermal medium layer 1-1
It is provided with electric tracing stick II 8, the cold medium layer 1-3 is provided with electric tracing stick I 7, the output end of the cold medium layer 1-3
It is connect with the input terminal of cold medium pump 2, the input terminal of electric heater 4 and combustion heater 5 pumps 2 output end with cold medium simultaneously
The output end of connection, electric heater 4 and combustion heater 5 is connect with the input terminal of thermal medium layer 1-1 simultaneously, thermal medium layer 1-1
The input terminal of output end and thermal medium pump 3 connect；
One input terminal of steam generator 6 and an input terminal of reheater 10 pump 3 output end with thermal medium simultaneously
Connection, an output end of steam generator 6 and an output end of reheater 10 connect with the input terminal of cold medium layer 1-3 simultaneously
It connects；
Another input terminal of steam generator 6 is connect with the input terminal of steam turbine high-pressure cylinder 9, steam turbine high-pressure cylinder 9
Two output ends are connect with another input terminal of II 18 1 input terminals of heater and reheater 10 respectively, reheater 10 it is another
One output end is connect with the corresponding input terminal of steam turbine mesolow cylinder 11, low in the input terminal and steam turbine of generator 12
The output end of cylinder pressure 11 connects, four output ends of steam turbine mesolow cylinder 11 respectively with an input terminal of condenser 13 plus
One input terminal of hot device I 15, an input terminal of oxygen-eliminating device 16 are connected with the input terminal of cooling tower 19, and one of condenser 13
Output end is connect with the input terminal of cooling tower 19, and the output end of cooling tower 19 is connect with another input terminal of condenser 13, is coagulated
The another output of vapour device 13 is connect with the input terminal of condensate pump 14, and the output end of condensate pump 14 is another with heater I 15
The connection of a input terminal, the output end of heater I 15 are connect with another input terminal of oxygen-eliminating device 16, the output end of oxygen-eliminating device 16 and
The input terminal of feed pump 17 connects, and the output end of feed pump 17 is connect with another input terminal of heater II 18, heater II
18 output end is connect with another input terminal of steam generator 6.
It is advanced optimized as of the invention, a kind of single tank heat-accumulation type hot energy-accumulating power station system of the present invention, the medium
Storage tank 1 is single tank mesolimnion energy storage canister.
It is advanced optimized as of the invention, a kind of single tank heat-accumulation type hot energy-accumulating power station system of the present invention, the electric companion
Hot pin I 7 is low temperature electric tracing stick.
It is advanced optimized as of the invention, a kind of single tank heat-accumulation type hot energy-accumulating power station system of the present invention, the electric companion
Hot pin II 8 is high temperature electric tracing stick.
It is advanced optimized as of the invention, a kind of single tank heat-accumulation type hot energy-accumulating power station system of the present invention, the heating
Device I 15 is low-pressure heater.
It is advanced optimized as of the invention, a kind of single tank heat-accumulation type hot energy-accumulating power station system of the present invention, the heating
Device II 18 is high-pressure heater.
The present invention is to solve the problems, such as that loss of power system is unable to run, and the present invention is in parallel with electric heater by configuring
Combustion heater can be switched when power supply power supply or the failure of electric heating relevant device and use combustion heater, to realize
The diversity in energy source ensures the reliability of power generation, increases the source of an energy, and reliability improves 100%, ensures
The reliability of power generation.
The present invention is to solve the problem of that double tank energy storage device material utilization amounts at high cost take up a large area greatly is unfavorable for arrangement,
By designing single tank mesolimnion energy storage device, significantly reduce to can effectively reduce into relative to double tank energy storage device material utilization amounts
This, cost reduces 40% or so, while occupied area reduces 30% or so, so that occupied area is small convenient for arrangement.
The present invention is to solve prior art to have no associated description to Turbine Island and heat accumulating portion mutual cooperation raising efficiency, is
Hot energy-accumulating power station system effectiveness is promoted, by configuring heat-storage medium-steam reheater, heats steam turbine high-pressure cylinder with heat-storage medium
Enter low pressure (LP) cylinder after steam discharge, to improve steam turbine Rankine cycle efficiency, gross energy transfer efficiency has reached 85% or more.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of single tank heat-accumulation type hot energy-accumulating power station system of the invention.
In figure: 1. medium reservoirs；1-1. thermal medium layer；1-2. mesolimnion；1-3. cold medium layer；2. cold medium pumps；3. heat
Medium pump；4. electric heater；4-1. power supply；5. combustion heater；5-1. fuel gas supply equipment；6. steam generator；7. electric companion
Hot pin I；8. electric tracing stick II；9. steam turbine high-pressure cylinder；10. reheater；11. steam turbine mesolow cylinder；12. generator；13. solidifying
Vapour device；14. condensate pump；15. heater I；16. oxygen-eliminating device；17. feed pump；18. heater II；19. cooling tower.
Specific embodiment
Specific embodiment one illustrates that present embodiment, the present invention are that solution loss of power system can not below with reference to Fig. 1
Operational reliability is low, double tank energy storage device material utilization amounts are big at high cost and takes up a large area and is unfavorable for arrangement and hot energy-accumulating power station system
System efficiency has problem to be hoisted；
The present invention provides a kind of single tank heat-accumulation type hot energy-accumulating power station system, the list tank heat-accumulation type hot energy-accumulating power station system packets
Include medium reservoirs 1, cold medium pump 2, thermal medium pump 3, electric heater 4, combustion heater 5, steam generator 6, electric tracing stick I 7,
Electric tracing stick II 8, steam turbine high-pressure cylinder 9, reheater 10, steam turbine mesolow cylinder 11, generator 12, condenser 13, condensate pump
14, heater I 15, oxygen-eliminating device 16, feed pump 17, heater II 18 and cooling tower 19；
The electric heater 4 is provided with power supply 4-1, the power output end of power supply 4-1 and the power input of electric heater 4
End connection；The combustion heater 5 is provided with fuel gas supply equipment 5-1, the energy output end of fuel gas supply equipment 5-1 and combustion
The energy input end of hot-air heater 4 connects；The medium reservoirs 1 include thermal medium layer 1-1, mesolimnion 1-2 and cold medium layer
1-3, thermal medium layer 1-1, the mesolimnion 1-2 and cold medium layer 1-3 successively vertical distribution in the inside of medium reservoirs 1, institute
Thermal medium layer 1-1, mesolimnion 1-2 and the cold medium layer 1-3 stated is by the solid of medium reservoirs 1, the thermal medium layer 1-1
It is provided with electric tracing stick II 8, the cold medium layer 1-3 is provided with electric tracing stick I 7, the output end of the cold medium layer 1-3
It is connect with the input terminal of cold medium pump 2, the input terminal of electric heater 4 and combustion heater 5 pumps 2 output end with cold medium simultaneously
The output end of connection, electric heater 4 and combustion heater 5 is connect with the input terminal of thermal medium layer 1-1 simultaneously, thermal medium layer 1-1
The input terminal of output end and thermal medium pump 3 connect；
One input terminal of steam generator 6 and an input terminal of reheater 10 pump 3 output end with thermal medium simultaneously
Connection, an output end of steam generator 6 and an output end of reheater 10 connect with the input terminal of cold medium layer 1-3 simultaneously
It connects；
Another input terminal of steam generator 6 is connect with the input terminal of steam turbine high-pressure cylinder 9, steam turbine high-pressure cylinder 9
Two output ends are connect with another input terminal of II 18 1 input terminals of heater and reheater 10 respectively, reheater 10 it is another
One output end is connect with the corresponding input terminal of steam turbine mesolow cylinder 11, low in the input terminal and steam turbine of generator 12
The output end of cylinder pressure 11 connects, four output ends of steam turbine mesolow cylinder 11 respectively with an input terminal of condenser 13 plus
One input terminal of hot device I 15, an input terminal of oxygen-eliminating device 16 are connected with the input terminal of cooling tower 19, and one of condenser 13
Output end is connect with the input terminal of cooling tower 19, and the output end of cooling tower 19 is connect with another input terminal of condenser 13, is coagulated
The another output of vapour device 13 is connect with the input terminal of condensate pump 14, and the output end of condensate pump 14 is another with heater I 15
The connection of a input terminal, the output end of heater I 15 are connect with another input terminal of oxygen-eliminating device 16, the output end of oxygen-eliminating device 16 and
The input terminal of feed pump 17 connects, and the output end of feed pump 17 is connect with another input terminal of heater II 18, heater II
18 output end is connect with another input terminal of steam generator 6.
When power supply 4-1 power supply or electric heating relevant device break down, afterburning is carried out by combustion heater 6 and ensures hair
The stability of electricity and heat supply.Cold medium pump 2 is extracted from the cold medium layer 1-3 of the lower part of the mesolimnion 1-2 of medium reservoirs 1 when energy storage
Cold medium is after electric heater 4 is heated to high temperature into the thermal medium layer 1-1 of the upper area of medium reservoirs 1；Energy storage when heat release
When thermal medium pump 3 extract energy-accumulating medium through steam generator 6 from the thermal medium layer 1-1 on the top of the mesolimnion 1-2 of medium reservoirs 1
Into the cold medium layer 1-3 of the lower part of medium reservoirs 1 after heat exchange.For low temperature heat-storage medium and the high temperature storage for avoiding medium reservoirs 1
Thermal medium exothermic temperature reduces, and electric tracing stick is respectively configured in the top thermal medium layer 1-1 and cold medium layer 1-3 of medium reservoirs 1
II 8 and electric tracing stick I 7, the heating partial of electric tracing stick II 8 and electric tracing stick I 7 is submerged into the hot cold medium of medium reservoirs 1
In, it is actuated for being heated to rated temperature when medium temperature decline.
It is single tank heat accumulation that the present invention, which carries out heat accumulation using the medium reservoirs 1 of electric heating energy storage side, belongs to high-temperature heat-storage, uses
Single tank energy storage is at high cost greatly compared with equipment and materials dosage to solve double tank energy storage to simplify system, takes up a large area and is unfavorable for cloth
The problem of setting, by configuring single tank mesolimnion energy storage device, relatively double tank energy storage device material utilization amounts are significantly reduced so as to have
Effect reduces cost, while occupied area is smaller convenient for arrangement, investment reduction cost.
Working principle and the course of work:
When source side power surplus (when such as wind-powered electricity generation, photovoltaic are difficult to the abandoning dissolved electricity and power grid " low ebb " there are power grid
Section), energy-accumulating power station starts energy storage, and cold medium pump 2 extracts low temperature heat-storage medium from 1 lower part cold medium layer 1-3 of medium reservoirs and flows through
Electric heater 4 converts thermal energy for the dump energy from source side by electric heater 4, heats under medium reservoirs 1
Then the top heat that high-temperature heat-storage medium is stored in medium reservoirs 1 is situated between by the low temperature heat-storage medium of portion cold medium layer 1-3 to high temperature
Matter layer 1-1, this process realize conversion of the electric energy to thermal energy.
When power consumer (power grid or direct power supply user) has electricity needs (such as power grid electricity consumption " peak " period), fused salt storage
Energy power station starts exoergic, and the high-temperature heat-storage medium in the 3 extraction top thermal medium layer 1-1 thermal medium regions of thermal medium pump flows through steam hair
Raw device 6 heats the water supply from feed pump 17 to generate steam, and the steam that steam generator 6 generates enters steam turbine high-pressure cylinder
9 actings, 9 steam discharge of steam turbine high-pressure cylinder enter reheater 10, are heated by the high-temperature heat-storage medium from the top thermal medium layer 1-1
Afterwards, steam enters the power generation of 11 work done driven generator 12 of steam turbine mesolow cylinder, and 11 steam discharge of steam turbine mesolow cylinder enters condensing
Device 13 is condensed into water, then successively enters after condensate pump 14, heater I 15, oxygen-eliminating device 16, feed pump 17, heater II 18
Steam generator 6 is to complete to recycle.Steam turbine exhaust heat is taken away by the heat exchange of condenser 13 by cooling tower 19.
When hot energy-accumulating power station is when power supply is lost or electric heater breaks down, changeable use is in parallel with electric heater
5 afterburning of combustion heater, to improve the power supply reliability of hot energy-accumulating power station.
To avoid low temperature heat-storage medium and the high-temperature heat-storage medium exothermic temperature of medium reservoirs 1 from reducing, in medium reservoirs 1
Electric tracing stick II 8 and electric tracing stick I 7, the electric heating of electric tracing stick is respectively configured in top thermal medium layer 1-1 and cold medium layer 1-3
It is partially submerged enter cold medium layer 1-3 storage tank medium in, when medium temperature decline when be actuated for being heated to rated temperature.
The present invention is that the more single tank equipment and materials dosage of the double tank energy storage of solution is at high cost greatly, takes up a large area and is unfavorable for arrangement
Problem, by configuring single tank mesolimnion energy storage device, relatively double tank energy storage device material utilization amounts are significantly reduced so as to effectively drop
Low cost, while occupied area is smaller convenient for arrangement.
The present invention is to promote hot energy-accumulating power station system effectiveness to use heat-storage medium by configuring heat-storage medium-steam reheater
Enter low pressure (LP) cylinder after heating steam turbine high-pressure cylinder steam discharge, to promote steam turbine Rankine cycle efficiency, and increases an energy
The source of amount, reliability improve 100%, ensure the reliability of power generation.
Specific embodiment two illustrates present embodiment, a kind of single tank heat-accumulation type hot energy storage electricity of the present invention below with reference to Fig. 1
It stands system, the medium reservoirs 1 are single tank mesolimnion energy storage canister；The device is former using cold and hot Media density difference natural layering
Reason, cold and hot medium is layered, and there is mesolimnion to be isolated for centre；
Cold and hot Media density difference natural layering principle is utilized using medium reservoirs 1, thermal medium is located at the tank of medium reservoirs 1
Body top, the lower cold medium of temperature are located at the cold medium layer 1-3 of the tank body lower part of medium reservoirs 1, natural shape between cold and hot medium
At isolated border interlayer, referred to as " mesolimnion " i.e. mesolimnion 1-2, the benefit using medium reservoirs 1 have: relatively double tank energy storage device materials
Expect that dosage significantly reduces so as to effectively reduce cost, while occupied area is smaller convenient for arrangement.
Specific embodiment three illustrates present embodiment, a kind of single tank heat-accumulation type hot energy storage electricity of the present invention below with reference to Fig. 1
It stands system, the electric tracing stick I 7 is low temperature electric tracing stick；The heating partial of electric tracing stick I 7 is submerged into medium reservoirs 1
In cold medium.
Specific embodiment four illustrates present embodiment, a kind of single tank heat-accumulation type hot energy storage electricity of the present invention below with reference to Fig. 1
It stands system, the electric tracing stick II 8 is high temperature electric tracing stick, and the heating partial of electric tracing stick II 8 is submerged into medium reservoirs 1
Cold medium in.
Specific embodiment five illustrates present embodiment, a kind of single tank heat-accumulation type hot energy storage electricity of the present invention below with reference to Fig. 1
It stands system, the heater I 15 is low-pressure heater.
Specific embodiment six illustrates present embodiment, a kind of single tank heat-accumulation type hot energy storage electricity of the present invention below with reference to Fig. 1
It stands system, the heater II 18 is high-pressure heater.
Working principle are as follows:
Energy storage principle: when power supply 4-1 side power surplus such as wind-powered electricity generation, photovoltaic there are power grid be difficult to the abandoning dissolved electricity and electricity
Net " low ebb " period, energy-accumulating power station start energy storage, and cold medium pump 2 extracts low temperature heat-storage medium from cold medium layer 1-3 and flows through electric add
Hot device 4 or combustion heater 5 convert thermal energy for the dump energy from the side power supply 4-1 by electric heater 4, by cold Jie
The low temperature heat-storage medium of matter layer 1-3 is heated to high temperature, then high-temperature heat-storage medium is stored in thermal medium layer 1-1, thermal medium
It is provided with mesolimnion 1-2 between layer 1-1 and cold medium layer 1-3, realizes isolation；11 steam discharge of steam turbine mesolow cylinder enters condenser
13 are condensed into water, then successively enter after condensate pump 14, heater I 15, oxygen-eliminating device 16, feed pump 17, heater II 18 and steam
Vapour generator 6 is to complete to recycle.At the same time, cooling tower 19 is taken away steam turbine exhaust heat by condenser 13.
Electricity generating principle:, can manual switching use when electrical network power station, that is, power supply 4-1 loses or electric heater 4 breaks down
Combustion heater 6 afterburning in parallel with electric heater, increases the source of an energy, and reliability improves 100%, to mention
The generating reliability of high fever energy-accumulating power station.When power consumer power grid or direct power supply user have electricity needs such as power grid electricity consumption is " high
Peak " period, the present apparatus start exoergic, and the high-temperature heat-storage medium in 3 extraction thermal medium layer 1-1 of thermal medium pump flows through steam generator
To generate steam, the steam that steam generator 6 generates, which enters steam turbine high-pressure cylinder 9, to be done for 6 water supply of the heating from feed pump 17
Function, 9 steam discharge of steam turbine high-pressure cylinder enter reheater 10, by from the high-temperature heat-storage medium of thermal medium layer 1-1 heating after, steam into
Enter the power generation of 11 work done driven generator 12 of steam turbine mesolow cylinder.
To avoid thermal medium layer 1-1, cold medium layer 1-3 exothermic temperature from reducing, electric tracing stick II 8 and electric tracing is respectively configured
Stick I 7, the heating partial of electric tracing stick are submerged into the heat of medium reservoirs 1, in cold medium, open when the decline of heat-storage medium temperature
It is dynamic to carry out being heated to rated temperature.
It is single tank heat accumulation that the present invention, which carries out heat accumulation using the medium reservoirs 1 of electric heating energy storage side, belongs to high-temperature heat-storage, uses
Single tank energy storage is to simplify system, and at high cost greatly to solve the more single tank equipment and materials dosage of double tank energy storage, it is unfavorable to take up a large area
In the arrangement the problem of, by configuring single tank mesolimnion energy storage device, double tank energy storage device material utilization amounts relatively significantly reduce to
It can effectively reduce cost, cost reduces 40% or so, and occupied area reduces 30% or so, so that occupied area is small to be convenient for cloth
It sets.
The present invention is to promote hot energy-accumulating power station system effectiveness to use heat-storage medium by configuring heat-storage medium-steam reheater
Enter low pressure (LP) cylinder after heating steam turbine high-pressure cylinder steam discharge, so that steam turbine Rankine cycle efficiency is improved, gross energy transfer efficiency
Reach 85% or more, and increased the source of an energy, reliability improves 100%, ensures the reliability of power generation.
Certainly, above description is not limitation of the present invention, and the present invention is also not limited to the example above, the art
The variations, modifications, additions or substitutions that those of ordinary skill is made within the essential scope of the present invention also belong to guarantor of the invention
Protect range.
Claims (6)
1. a kind of list tank heat-accumulation type hot energy-accumulating power station system, it is characterised in that: the list tank heat-accumulation type hot energy-accumulating power station system includes
Medium reservoirs (1), cold medium pump (2), thermal medium pump (3), electric heater (4), combustion heater (5), steam generator (6),
Electric tracing stick I (7), electric tracing stick II (8), steam turbine high-pressure cylinder (9), reheater (10), steam turbine mesolow cylinder (11), power generation
Machine (12), condenser (13), condensate pump (14), heater I (15), oxygen-eliminating device (16), feed pump (17), heater II (18) and
Cooling tower (19)；
The electric heater (4) is provided with power supply (4-1), the power output end of power supply (4-1) and the power supply of electric heater (4)
Input terminal connection；The combustion heater (5) is provided with fuel gas supply equipment (5-1), the energy of fuel gas supply equipment (5-1)
Output end is connect with the energy input end of combustion heater (4)；
The medium reservoirs (1) include thermal medium layer (1-1), mesolimnion (1-2) and cold medium layer (1-3), and the heat is situated between
Matter layer (1-1), mesolimnion (1-2) and cold medium layer (1-3) successively vertical distribution in the inside of medium reservoirs (1), the heat
Dielectric layer (1-1), mesolimnion (1-2) and cold medium layer (1-3) are by the solid of medium reservoirs (1), the thermal medium layer
(1-1) is provided with electric tracing stick II (8), and the cold medium layer (1-3) is provided with electric tracing stick I (7), the cold medium layer
The output end of (1-3) is connect with the input terminal of cold medium pump (2), and the input terminal of electric heater (4) and combustion heater (5) is simultaneously
Connect with the output end of cold medium pump (2), the output end of electric heater (4) and combustion heater (5) and meanwhile with thermal medium layer (1-
1) input terminal connection, the output end of thermal medium layer (1-1) are connect with the input terminal of thermal medium pump (3)；
The input terminal output with thermal medium pump (3) simultaneously of the input terminal and reheater (10) of steam generator (6)
One output end of end connection, an output end of steam generator (6) and reheater (10) simultaneously with cold medium layer (1-3)
Input terminal connection；
Another input terminal of steam generator (6) is connect with the input terminal of steam turbine high-pressure cylinder (9), steam turbine high-pressure cylinder (9)
Two output ends connect respectively with another input terminal of input terminal of heater II (18) and reheater (10), reheater
(10) another output is connect with steam turbine mesolow cylinder (11) corresponding input terminal, the input terminal of generator (12)
Connect with the output end of steam turbine mesolow cylinder (11), four output ends of steam turbine mesolow cylinder (11) respectively with condenser
(13) a input terminal of an input terminal, heater I (15), an input terminal of oxygen-eliminating device (16) and cooling tower (19)
Input terminal connection, an output end of condenser (13) are connect with the input terminal of cooling tower (19), the output end of cooling tower (19)
It is connect with another input terminal of condenser (13), the another output of condenser (13) and the input terminal of condensate pump (14) connect
Connect, the output end of condensate pump (14) is connect with another input terminal of heater I (15), the output end of heater I (15) with remove
Another input terminal of oxygen device (16) connects, and the output end of oxygen-eliminating device (16) is connect with the input terminal of feed pump (17), feed pump
(17) output end is connect with another input terminal of heater II (18), the output end and steam generator of heater II (18)
(6) another input terminal connection.
2. a kind of single tank heat-accumulation type hot energy-accumulating power station system according to claim 1, it is characterised in that: the medium storage
Tank (1) is single tank mesolimnion energy storage canister.
3. a kind of single tank heat-accumulation type hot energy-accumulating power station system according to claim 1, it is characterised in that: the electric tracing
Stick I (7) is low temperature electric tracing stick.
4. a kind of single tank heat-accumulation type hot energy-accumulating power station system according to claim 1, it is characterised in that: the electric tracing
Stick II (8) is high temperature electric tracing stick.
5. a kind of single tank heat-accumulation type hot energy-accumulating power station system according to claim 1, it is characterised in that: the heater
I (15) are low-pressure heater.
6. a kind of single tank heat-accumulation type hot energy-accumulating power station system according to claim 1, it is characterised in that: the heater
II (18) are high-pressure heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811209802.8A CN109185853A (en) | 2018-10-17 | 2018-10-17 | A kind of list tank heat-accumulation type hot energy-accumulating power station system |
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| CN201811209802.8A CN109185853A (en) | 2018-10-17 | 2018-10-17 | A kind of list tank heat-accumulation type hot energy-accumulating power station system |
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| CN109185853A true CN109185853A (en) | 2019-01-11 |
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ID=64945289
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| CN201811209802.8A Pending CN109185853A (en) | 2018-10-17 | 2018-10-17 | A kind of list tank heat-accumulation type hot energy-accumulating power station system |
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Cited By (1)
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|---|---|---|---|---|
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Application publication date: 20190111 |