CN109448879A - Switchable type supercritical carbon dioxide circulating thermoelectric co-feeding system for sodium-cooled fast reactor - Google Patents
Switchable type supercritical carbon dioxide circulating thermoelectric co-feeding system for sodium-cooled fast reactor Download PDFInfo
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- CN109448879A CN109448879A CN201910027507.9A CN201910027507A CN109448879A CN 109448879 A CN109448879 A CN 109448879A CN 201910027507 A CN201910027507 A CN 201910027507A CN 109448879 A CN109448879 A CN 109448879A
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- sodium
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- cold
- heat exchanger
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 36
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 16
- 239000011734 sodium Substances 0.000 claims abstract description 16
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 15
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 229960004424 carbon dioxide Drugs 0.000 description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000001816 cooling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010248 power generation Methods 0.000 description 5
- NWYRNCMKWHKPAI-UHFFFAOYSA-N C(=O)=O.[Na] Chemical compound C(=O)=O.[Na] NWYRNCMKWHKPAI-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D1/00—Details of nuclear power plant
- G21D1/02—Arrangements of auxiliary equipment
-
- 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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/32—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines using steam of critical or overcritical pressure
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D5/00—Arrangements of reactor and engine in which reactor-produced heat is converted into mechanical energy
- G21D5/04—Reactor and engine not structurally combined
- G21D5/06—Reactor and engine not structurally combined with engine working medium circulating through reactor core
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
Abstract
For the switchable type supercritical carbon dioxide circulating thermoelectric co-feeding system of sodium-cooled fast reactor, belong to distributed energy technical field.The present invention is in order to solve the problems, such as existing to realize that cogeneration cycle efficieny is low, security of system is poor using vapour-device of working medium.The present invention includes for providing the first circuit of heat source, the second servo loop for transmitting heat, the tertiary circuit for converting thermal energy into electric energy and for the 4th circuit of heating network, heat is carried out by sodium-sodium heat exchanger between first circuit and second servo loop to exchange, it is exchanged between second servo loop and tertiary circuit by sodium-co 2 heat exchanger progress heat and realizes power supply, it is connected with cryogenic regenerator on tertiary circuit, heat supply is realized by cryogenic regenerator in tertiary circuit and the 4th circuit.The present invention can be realized switchable type core heap cogeneration, and rationally significantly improve core shut-down system safety using sodium heap feature combination working medium operating parameter.
Description
Technical field
Cogeneration system is realized using supercritical carbon dioxide circulation the present invention relates to a kind of, and it is efficient to belong to clean energy resource
Utilize technical field.
Background technique
Sodium-cooled fast reactor is that current development is more comprehensive in nuclear power of new generation, is sent out by the emphasis that experimental verification has reliability
Open up heap-type.Sodium-cooled fast reactor conventional island mainly uses vapour-device of working medium at present, but since vapor (steam) temperature is lower (about 480 DEG C), leads to heat
Power cycle efficieny is relatively low.In addition, sodium water reaction can generate strong corrosive material sodium hydroxide and explosive gas hydrogen, it is
Core heap impacts safely.Using vapour-device of working medium conventional island steam turbine volume, weight, subsidiary engine substantial amounts, the system integration is set
It counts complex.
Domestic electrical demand tends to be steady at present, but reducing internal heat electrification trend is obvious, has pushed the development of large-scale core heap.With this
Meanwhile in order to preferably utilize nuclear energy, the concept of core heap heat supply is gradually taken seriously.Energy supply is piled up in order to promote large-scale core
In advantage, reduce energy supply cost, need develop be suitable for core heap cogeneration loop structure.
The power generation of supercritical carbon dioxide Brayton cycle is considered as potential substitution vapour-water Rankine cycle new-generation
Circulation pattern.It is mainly characterized by using carbon dioxide as working medium and in a supercritical state always in the circulating cycle, working medium energy-flux density
Greatly, taking thermal energy power forces main device volume to have significant diminution compared with water-steam circulation, while can also be water-saving or scarce in water resource
Weary area uses.Simple cycle and recompression, which circulate in pilot system, to be generally used, and simple cycle system is simple but imitates
Rate is lower, therefore is badly in need of proposing a kind of higher cogeneration circulatory system of efficiency, to meet land large-scale core heap cogeneration
Demand.
Summary of the invention
, system peace low using vapour-device of working medium realization cogeneration cycle efficieny that the purpose of the present invention is to solve existing
The problem of full property difference, and then the switchable type supercritical carbon dioxide circulating thermoelectric co-feeding system for being used for sodium-cooled fast reactor is provided.
Technical solution of the present invention:
For the switchable type supercritical carbon dioxide circulating thermoelectric co-feeding system of sodium-cooled fast reactor, including for providing heat source
The first circuit, the second servo loop for transmitting heat, the tertiary circuit for converting thermal energy into electric energy and be used for heating tube
4th circuit of net, the cycle fluid of the first circuit and second servo loop are sodium, and the cycle fluid in tertiary circuit and the 4th circuit is
Carbon dioxide carries out heat by sodium-sodium heat exchanger between the first circuit and second servo loop and exchanges, second servo loop and tertiary circuit
Between heat exchange carried out by sodium-co 2 heat exchanger and realize power supply, cryogenic regenerator is connected on tertiary circuit, the
Heat supply is realized by cryogenic regenerator with the 4th circuit in three circuits.
Further, first circuit is realized transmits in sodium cooled fast reactor core internal heat, sodium-sodium heat exchanger heat
It brings out mouth to be connected to sodium-co 2 heat exchanger hot-side inlet, sodium-sodium heat exchanger cold-side inlet is changed with sodium-carbon dioxide
The cold side outlet of hot device is connected to；The generator that the tertiary circuit is equipped with turbine and connect with turbine, the sodium-dioxy
The hot end outlet for changing carbon heat exchanger is connect with the entrance of turbine, and the hot-side inlet of the outlet connection cryogenic regenerator of turbine is connected,
The cold side outlet of cryogenic regenerator is connected with sodium-co 2 heat exchanger cold-side inlet, and the 4th circuit is equipped with cold
But the hot end outlet of device and main compressor, cryogenic regenerator is connected to the entrance of cooler, the outlet of cooler and main compressor
Entrance be connected, the outlet of main compressor be connected to the cold-side inlet of cryogenic regenerator, cooler and heating network interface foundation
It connects, main compressor driving motor is installed on main compressor.
Further, high temperature regenerator, the outlet of turbine and the hot-side inlet of high temperature regenerator are additionally provided on tertiary circuit
The hot end outlet of connection, high temperature regenerator be connected to the hot-side inlet of cryogenic regenerator, and the hot end of cryogenic regenerator exports and the
The arrival end in four circuits is connected to, and the outlet end in the 4th circuit is connected to the cold-side inlet of cryogenic regenerator, cryogenic regenerator it is cold
It brings out mouth to be connected to the cold-side inlet of high temperature regenerator, the cold side outlet and sodium-co 2 heat exchanger of high temperature regenerator are cold
End entrance connection.
Further, be arranged in parallel recompression machine on the 4th circuit, be additionally provided on the 4th circuit current divider and
Junction station, the cryogenic regenerator hot end outlet is connected with splitter inlet, through in two stock stream of current divider one end with it is cold
But device is connected, and cooler outlet is connected with main compressor entrance, and main compressor outlet is connected with cryogenic regenerator cold-side inlet, passes through
The other end in two stock stream of current divider is connected with recompression machine entrance, and the cold end of the outlet and cryogenic regenerator that recompress machine passes through
It is connected to after crossing junction station confluence with the cold-side inlet of high temperature regenerator.
Further, the cooler and heating network orifice realize heat supply.
The invention has the following advantages:
1, the present invention provides a kind of land large-scale sodium-cooled fast reactor energy supplying system, current using carbon dioxide recycle refrigerant substitute
The water used on test reactor-steam working medium reaches or surmounts original system efficiency, realizes switchable type core heap cogeneration, and
And core shut-down system safety rationally is significantly improved using sodium heap feature combination working medium operating parameter；
2, the present invention is matching using supercritical carbon dioxide working medium according to sodium-cooled fast reactor feature, in conjunction with land large-scale core
Heap cogeneration application background devises simple-recompression supercritical carbon dioxide energy supplying system, it can be achieved that pure electricity generation system is followed
Ring efficiency is more than 41%；
3, for the switchable type supercritical carbon dioxide circulating thermoelectric co-feeding system of sodium-cooled fast reactor, it can be achieved that thermoelectricity joins
For, circulating generation efficiency 35%, 85 DEG C, 0.8MPa hot water are provided, thermal power accounting heating power circuit power of heat source is up to 50%；
4, the rotating machinery of main compressor, recompression machine and turbine, is arranged using split axle, is suitable for land large-scale core heap,
Technological difficulties during Highgrade integration are avoided, equipment and system controllability are more.
Detailed description of the invention
Fig. 1 is that the system connection of the switchable type supercritical carbon dioxide circulating thermoelectric co-feeding system for sodium-cooled fast reactor is closed
System's figure；
The first circuit 1- in figure, 2- second servo loop, 3- tertiary circuit, the 4th circuit 4-, 10- sodium cooled fast reactor core, 11-
Sodium-sodium heat exchanger, 12- sodium-co 2 heat exchanger, 13- cryogenic regenerator, 14- high temperature regenerator, 15- cooler, 21- are saturating
It is flat, 22- main compressor, 23- recompression machine, 31- generator, 32- main compressor driving motor, 33- recompression machine driving motor,
41- current divider, 42- junction station, 51- heating network interface.
Specific embodiment
Specific embodiment 1: embodiment is described with reference to Fig. 1, can be switched for sodium-cooled fast reactor of present embodiment
Formula supercritical carbon dioxide circulating thermoelectric co-feeding system, including the first circuit 1 for providing heat source, for transmitting heat
Secondary circuit 2, the tertiary circuit 3 for converting thermal energy into electric energy and the 4th circuit 4 for heating network, 1 He of the first circuit
The cycle fluid of second servo loop 2 is sodium, and the cycle fluid in tertiary circuit 3 and the 4th circuit is carbon dioxide, the first circuit 1 and the
Heat exchange is carried out by sodium-sodium heat exchanger 11 between secondary circuit 2, passes through sodium-dioxy between second servo loop 2 and tertiary circuit 3
Change carbon heat exchanger 12 and carry out heat exchange and simultaneously realize power supply, be connected with cryogenic regenerator 13 on tertiary circuit 3, tertiary circuit 3 and
4th circuit 4 heat supply is realized by cryogenic regenerator 13.So set, being using the power generation of supercritical carbon dioxide Brayton cycle
Potential new-generation circulation pattern is mainly characterized by using carbon dioxide as working medium and in the circulating cycle always in supercritical state
State, working medium energy-flux density is big, takes that thermal energy power is strong, using supercritical carbon dioxide as the entire cogeneration system of cycle fluid
Main equipment volume has significant diminution compared with water-steam circulation, while can also water-saving or in water resource shortage area use.
Specific embodiment 2: embodiment is described with reference to Fig. 1, can be switched for sodium-cooled fast reactor of present embodiment
Formula supercritical carbon dioxide circulating thermoelectric co-feeding system, first circuit 1 are realized in 10 internal heat of sodium cooled fast reactor core
Transmitting, the outlet of sodium-sodium heat exchanger 11 hot end are connected to the hot-side inlet of sodium-co 2 heat exchanger 12, sodium-sodium heat exchanger 11
Cold-side inlet be connected to the cold side outlet of sodium-co 2 heat exchanger 12；The tertiary circuit 3 be equipped with turbine 21 and with
The hot end outlet of the generator 31 that turbine 21 connects, the sodium-co 2 heat exchanger 12 is connect with the entrance of turbine 21, thoroughly
The hot-side inlet of flat 21 outlet connection cryogenic regenerator 13 is connected, the cold side outlet and sodium-carbon dioxide of cryogenic regenerator 13
The cold-side inlet of heat exchanger 12 is connected, and the 4th circuit 4 is equipped with cooler 15 and main compressor 22, cryogenic regenerator 13
Hot end outlet be connected to the entrance of cooler 15, the outlet of cooler 15 is connected with the entrance of main compressor 22, main compressor
22 outlet is connected to the cold-side inlet of cryogenic regenerator 13, and cooler 15 and heating network interface 51 establish connection, main compression
Main compressor driving motor 32 is installed on machine 22；Main compressor 22 is driven by main compressor driving motor 32, recompresses machine 23
It is driven by recompression machine driving motor 33, generator 31 is driven by turbine 21.
Specific embodiment 3: embodiment is described with reference to Fig. 1, can be switched for sodium-cooled fast reactor of present embodiment
Formula supercritical carbon dioxide circulating thermoelectric co-feeding system, is additionally provided with high temperature regenerator 14 on tertiary circuit 3, the outlet of turbine 21 with
The hot-side inlet of high temperature regenerator 14 is connected to, and the hot end outlet of high temperature regenerator 14 and the hot-side inlet of cryogenic regenerator 13 connect
Logical, the hot end outlet of cryogenic regenerator 13 is connected to the arrival end in the 4th circuit 4, the outlet end in the 4th circuit 4 and low temperature backheat
The cold-side inlet of device 13 is connected to, and the cold side outlet of cryogenic regenerator 13 is connected to the cold-side inlet of high temperature regenerator 14, and high temperature returns
The cold side outlet of hot device 14 is connected to the cold-side inlet of sodium-co 2 heat exchanger 12.So set, being set on tertiary circuit 3
It is equipped with high temperature regenerator 14, high temperature regenerator 14 can be improved the heat exchange efficiency between tertiary circuit 3 and the 4th circuit 4, guarantee
System keeps high efficiency during power supply and/or the variation of heat demand.
Specific embodiment 4: embodiment is described with reference to Fig. 1, can be switched for sodium-cooled fast reactor of present embodiment
Formula supercritical carbon dioxide circulating thermoelectric co-feeding system, has been arranged in parallel recompression machine 23 on the 4th circuit 4, and the 4th time
Current divider 41 and junction station 42 are additionally provided on road 4, the hot end outlet of the cryogenic regenerator 13 is connected with 41 entrance of current divider, passes through
One end in 41 liang of stock streams of current divider is connected with cooler 15, and the outlet of cooler 15 is connected with 22 entrance of main compressor, main pressure
The outlet of contracting machine 22 is connected with 13 cold-side inlet of cryogenic regenerator, through the other end and recompression machine 23 in 41 liang of stock streams of current divider
Entrance be connected, recompress machine 23 outlet and cryogenic regenerator 13 cold end by junction station 42 confluence after with high temperature regenerator 14
Cold-side inlet connection.So set, the recompression machine 23 being arranged in parallel on the 4th circuit 4 can be improved system thermoelectricity effect
Rate is embodied in, under the action of recompressing machine 23 and inside the tertiary circuit 3 of the realization function of supplying power of the 4th circuit communication
The cycle efficieny of carbon dioxide recycle working medium is reinforced, therefore this recompression machine 23 being arranged in parallel improves entire heat
The recompression machine 23 of the thermoelectrical efficiency of chp system, parallel way setting is real on the whole by tertiary circuit 3 and the 4th circuit 4
It now interconnects, this effect reached that interconnects is far longer than the only increase confession that only increase compressors in series reaches on the 4th circuit
The effect of the efficiency of cycle, moreover, the mode of this parallel connection has the control system relatively rationalized can in cogeneration process
To realize the open and close of individually control parallel line, and then effectively control cogeneration efficiency.
The recompression machine 23 that has been arranged in parallel on the 4th circuit 4 that the present embodiment proposes is the invention in cogeneration
One important breakthrough of energy resource system, this mode improve cogeneration efficiency, also further improve capacity usage ratio.
Only increase on the 4th circuit in order to further illustrate being greater than using the raising of recompression machine 23 cogeneration efficiency
Add the effect for only increasing heating cycle efficiency that compressors in series reaches, be specifically described below as follows:
The recompression machine in parallel on the 4th circuit, the cycle fluid by 13 hot end of cryogenic regenerator outlet output passes through at this time
The shunting of current divider 41 is crossed, a part is used for heating network heat supply, and another part is laggard by recompression machine 23, high temperature regenerator 14
Enter sodium-co 2 heat exchanger 12, into sodium-co 2 heat exchanger 12 cycle fluid exchange heat again after do for turbine 21
Function power generation, the power supply of tertiary circuit 3 at this time and 4 heating efficiency of the 4th circuit get a promotion, and the two is synchronous carries out；
Therefore the function and effect of recompression machine 23 in parallel are significant.
Specific embodiment 5: embodiment is described with reference to Fig. 1, can be switched for sodium-cooled fast reactor of present embodiment
Formula supercritical carbon dioxide circulating thermoelectric co-feeding system is equipped with recompression machine driving motor 33 on the recompression machine 23,
The cooler 15 is connected to heating network interface 51 realizes heat supply.
Specific embodiment 6: embodiment is described with reference to Fig. 1, can be switched for sodium-cooled fast reactor of present embodiment
Formula supercritical carbon dioxide circulating thermoelectric co-feeding system, recompression circulation turbocompressor split axle structure, this is structurally characterized in that
Flat, compressor split axle arrangement, the power generation of turbine driving motor, compressor is driven by drive motor for compressor, including turbine 21, main pressure
Contracting machine 22, recompression machine 23, generator 31, main compressor driving motor 32, recompression machine driving motor 33, cryogenic regenerator
13, high temperature regenerator 14, cooler 15, current divider 41 and junction station 42, sodium-co 2 heat exchanger 12 is in sodium cooled fast reactor core
Heat is exchanged in 10 heat sources, 12 cold side outlet of sodium-co 2 heat exchanger is connected with 21 entrance of turbine, the outlet of turbine 21 and high temperature
14 hot-side inlet of regenerator is connected, and the outlet of 14 hot end of high temperature regenerator is connected with 13 hot-side inlet of cryogenic regenerator, low temperature backheat
The outlet of 13 hot end of device is connected with 41 entrance of current divider, and the outlet A of current divider 41 is connected with recompression 23 entrance of machine, current divider 41
The outlet B is connected with cooler 15, and the outlet of cooler 15 is connected with 22 entrance of main compressor, the outlet of main compressor 22 and low temperature backheat
13 cold-side inlet of device is connected, and 13 cold side outlet of cryogenic regenerator is connected with the B entrance of junction station 42, the outlet of recompression machine 23 and remittance
The A entrance for flowing device 42 is connected, and the outlet of junction station 42 is connected with 14 cold-side inlet of high temperature regenerator, 14 cold side outlet of high temperature regenerator
It is connected with 12 cold-side inlet of sodium-co 2 heat exchanger；Main compressor 22 is driven by main compressor driving motor 32, recompresses machine
23 are driven by recompression machine driving motor 33, and generator 31 is driven by turbine 21；The cooling working medium side outlet of cooler 15 and heat supply
51 output end of pipe network interface is connected.
Loop structure can be switched over by regenerator, junction station, current divider bypass, when the bypass of cryogenic regenerator 13, be converged
When flowing the bypass of device 42, the bypass closing of current divider 41, tertiary circuit only exports electric energy, turbine 21 and the generator connecting with turbine 21
31, the hot end outlet of the sodium-co 2 heat exchanger 12 is connect with the entrance of turbine 21, and the outlet of turbine 21 connects high temperature
The hot-side inlet of regenerator 14 is connected, and the outlet of 14 hot end of high temperature regenerator is connected with 13 hot-side inlet of cryogenic regenerator, and low temperature returns
Hot 13 hot end of device outlet is connected with 41 entrance of current divider, and the outlet A of current divider 41 is connected with recompression 23 entrance of machine, current divider
The outlet 41B is connected with cooler 15, and the outlet of cooler 15 is connected with 22 entrance of main compressor, and the outlet of main compressor 22 is returned with low temperature
Hot 13 cold-side inlet of device be connected, 14 cold side outlet of cryogenic regenerator is connected with the B entrance of junction station 42, recompression machine 23 export and
The A entrance of junction station 42 is connected, and the outlet of junction station 42 is connected with 14 cold-side inlet of high temperature regenerator, and 13 cold end of high temperature regenerator goes out
Mouth is connected with 12 cold-side inlet of sodium-co 2 heat exchanger；
When the bypass of cryogenic regenerator 13, the bypass of junction station 42, the bypass of current divider 41 are opened, it is same that tertiary circuit exports electric energy
The 4th circuit heat supply of Shi Qiyong, cooler water cooling working medium are used for user's heat supply；12 cold side outlet of sodium-co 2 heat exchanger and thoroughly
Flat 21 entrances are connected, and the outlet of turbine 21 is connected with 14 hot-side inlet of high temperature regenerator, the outlet of 14 hot end of high temperature regenerator and low temperature
13 hot end bypass inlet of regenerator is connected, and 13 hot end bypass outlet of cryogenic regenerator is connected with 41 bypass inlet of current divider, shunts
41 bypass outlet of device is connected with cooler 15, cooler 15 outlet is connected with 22 entrance of main compressor, main compressor 22 export and
14 cold end bypass inlet of cryogenic regenerator is connected, and 14 cold end bypass outlet of cryogenic regenerator is connected with 42 bypass inlet of junction station,
42 bypass outlet of junction station is connected with 13 cold-side inlet of high temperature regenerator, 13 cold side outlet of high temperature regenerator and sodium-carbon dioxide
12 cold-side inlet of heat exchanger is connected.The cooling working medium side outlet of cooler 15 is connected with 51 output end of heating network interface.
Simple cycle cogeneration system principle is: the system features are to be by recompression cyclic switching by equipment bypass
Simple extraction cycle, cooler water cooling working medium are used for user's heat supply, and sodium-co 2 heat exchanger 12 is in 10 warm of sodium cooled fast reactor core
Heat is exchanged in source and enters turbine 21, is done work for turbine 21, and then realizes that generator 31 generates electricity, and the heat source after power generation is again
It exchanges heat through cryogenic regenerator 13, is supplied to cooler 15, the cooling working medium side outlet of cooler 15 and heating network interface 51 export
End is connected, and provides heat for heating network.
In the present embodiment, 12 sodium lateral pressure of sodium-co 2 heat exchanger is normal pressure, i.e. an atmospheric pressure, and carbon dioxide
Lateral pressure about 15~25MPa, when sodium-carbon dioxide realizes heat exchange process, sodium-two in sodium-co 2 heat exchanger 12
When carbonoxide 12 pipe leakage of heat exchanger, in sodium-co 2 heat exchanger 12 circulatory mediator carbon dioxide can effectively block because
Secondary sodium caused by heat exchanger channel is damaged leaks, also, carbon dioxide with sodium haptoreaction slowly, product is attached to and contacts
Face, the risk of no aggravation accident degree, to significantly improve core shut-down system safety.
In the present embodiment, using micro-channel heat exchanger as sodium-co 2 heat exchanger 12, reach end difference less than 20 DEG C
Performance, while size of heat exchanger is 1st/20th of shell-and-tube heat exchanger, to the high temperature (300~480 of industrial grade carbon-dioxide
DEG C), have corrosion-resistant, compressive property under the conditions of high pressure (15MPa~25MPa), to secondary sodium working medium 0.101MPa, 320~
Corrosion-resistant, resistance to compression under the conditions of 500 DEG C.
Meanwhile using micro-channel heat exchanger as cryogenic regenerator 13 and high temperature regenerator 14: reaching end difference less than 10 DEG C
Performance, size of heat exchanger is 1st/20th of shell-and-tube heat exchanger, to the high pressure of industrial grade carbon-dioxide (15MPa~
Has corrosion-resistant, compressive property under the conditions of 25MPa).
The present embodiment is calculated and is analyzed by circulatory system thermodynamic behaviour, and it is as follows to obtain data result:
Under recompression circulation enables in scheme, if efficiency of turbine reaches 90%, compressor efficiency and reaches 85%, overall thermal
Force system cycle efficieny can be more than 41%.
Simple cycle enables lower, it can be achieved that cogeneration, circulating generation efficiency 35%, provide 85 DEG C, 0.8MPa in scheme
Hot water, thermal power accounting heating power circuit power of heat source is up to 50%.
This embodiment is just an exemplary description of this patent, does not limit its protection scope, those skilled in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (5)
1. be used for sodium-cooled fast reactor switchable type supercritical carbon dioxide circulating thermoelectric co-feeding system, it is characterised in that: including with
The first circuit (1), the second servo loop (2) for transmitting heat, the third for converting thermal energy into electric energy in offer heat source
Circuit (3) and the 4th circuit (4) for heating network, the cycle fluid of the first circuit (1) and second servo loop (2) they are sodium, the
The cycle fluid in three circuits (3) and the 4th circuit is carbon dioxide, passes through sodium-sodium between the first circuit (1) and second servo loop (2)
Heat exchanger (11) carries out heat exchange, passes through sodium-co 2 heat exchanger (12) between second servo loop (2) and tertiary circuit (3)
It carries out heat exchange and simultaneously realizes power supply, be connected on tertiary circuit (3) cryogenic regenerator (13), tertiary circuit (3) and the 4th time
Road (4) carries out heat exchange by cryogenic regenerator (13) and realizes heat supply.
2. the switchable type supercritical carbon dioxide circulating thermoelectric alliance system according to claim 1 for sodium-cooled fast reactor
System, it is characterised in that: first circuit (1) is realized transmits in sodium cooled fast reactor core (10) internal heat, sodium-sodium heat exchanger
(11) hot end outlet is connected to the hot-side inlet of sodium-co 2 heat exchanger (12), sodium-sodium heat exchanger (11) cold-side inlet
It is connected to the cold side outlet of sodium-co 2 heat exchanger (12)；The tertiary circuit (3) is equipped with turbine (21) and and turbine
(21) generator (31) connected, the hot end outlet of the sodium-co 2 heat exchanger (12) and the entrance of turbine (21) connect
Connect, the hot-side inlet of the outlet of turbine (21) connection cryogenic regenerator (13) is connected, the cold side outlet of cryogenic regenerator (13) with
The cold-side inlet of sodium-co 2 heat exchanger (12) is connected, and the 4th circuit (4) is equipped with cooler (15) and main compression
The hot end outlet of machine (22), cryogenic regenerator (13) is connected to the entrance of cooler (15), the outlet and main pressure of cooler (15)
The entrance of contracting machine (22) is connected, and the outlet of main compressor (22) is connected to the cold-side inlet of cryogenic regenerator (13), cooler
(15) connection is established with heating network interface (51), main compressor driving motor (32) is installed on main compressor (22).
3. the switchable type supercritical carbon dioxide circulating thermoelectric alliance system according to claim 2 for sodium-cooled fast reactor
System, it is characterised in that: be additionally provided on tertiary circuit (3) high temperature regenerator (14), the outlet of turbine (21) and high temperature regenerator
(14) the hot end outlet of hot-side inlet connection, high temperature regenerator (14) is connected to the hot-side inlet of cryogenic regenerator (13), low
The hot end outlet of warm regenerator (13) is connected to the arrival end in the 4th circuit (4), the outlet end in the 4th circuit (4) and low temperature backheat
The cold-side inlet of device (13) is connected to, and the cold side outlet of cryogenic regenerator (13) is connected to the cold-side inlet of high temperature regenerator (14),
The cold side outlet of high temperature regenerator (14) is connected to the cold-side inlet of sodium-co 2 heat exchanger (12).
4. the switchable type supercritical carbon dioxide circulating thermoelectric alliance system according to claim 3 for sodium-cooled fast reactor
System, it is characterised in that: be arranged in parallel recompression machine (23), be additionally provided on the 4th circuit (4) point on the 4th circuit (4)
Device (41) and junction station (42) are flowed, the hot end outlet of the cryogenic regenerator (13) is connected with current divider (41) entrance, through shunting
One end in (41) two stock stream of device is connected with cooler (15), and cooler (15) outlet is connected with main compressor (22) entrance,
Main compressor (22) outlet is connected with cryogenic regenerator (13) cold-side inlet, through in (41) two stock stream of current divider the other end and
Recompression machine (23) entrance is connected, and the cold end of the outlet and cryogenic regenerator (13) that recompress machine (23) is converged by junction station (42)
It is connected to after stream with the cold-side inlet of high temperature regenerator (14).
5. the switchable type supercritical carbon dioxide circulating thermoelectric alliance system according to claim 4 for sodium-cooled fast reactor
System, it is characterised in that: recompression machine driving motor (33), the cooler (15) are equipped on the recompression machine (23)
It is connected to heating network interface (51) and realizes heat supply.
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| CN201910027507.9A CN109448879B (en) | 2019-01-11 | Switchable supercritical carbon dioxide circulation cogeneration system for sodium-cooled fast reactor |
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| CN201910027507.9A CN109448879B (en) | 2019-01-11 | Switchable supercritical carbon dioxide circulation cogeneration system for sodium-cooled fast reactor |
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