CN108643984A - A kind of spentnuclear fuel pond passive cooling system based on organic rankie cycle - Google Patents
A kind of spentnuclear fuel pond passive cooling system based on organic rankie cycle Download PDFInfo
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- CN108643984A CN108643984A CN201810417909.5A CN201810417909A CN108643984A CN 108643984 A CN108643984 A CN 108643984A CN 201810417909 A CN201810417909 A CN 201810417909A CN 108643984 A CN108643984 A CN 108643984A
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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
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
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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
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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
- F01K13/00—General layout or general methods of operation of complete plants
-
- 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
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
According to a kind of passive cooling system in the spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology according to the present invention, including spentnuclear fuel pond, the low boiling point organic working medium in pond absorbs spentnuclear fuel decay heat, generates superheated steam；Steam turbine, heat exchanger, liquid reserve tank, cycle fluid pump, flow control valve, filter, the generator being sequentially connected to by pipeline, with rotary shaft, wherein steam turbine has output shaft, the output shaft is driven rotation by steam turbine and is generated electricity with axis connection, generator is rotated.Because the passive cooling system in spentnuclear fuel pond according to the present invention combines the cooling in spentnuclear fuel pond with existing organic rankie cycle low-temperature cogeneration technology, use low temperature Organic Rankine Cycle generation mode, spentnuclear fuel waste heat is recycled, and there is no cost of material, so, technical scheme of the present invention can not only reduce the discharge capacity of pollutant, and can improve the utilization rate of the energy.
Description
Technical field
The invention belongs to nuclear reactor safety fields, and in particular to a kind of spentnuclear fuel pond based on organic rankie cycle
Passive cooling system.
Background technology
Nuclear energy has high energy source density and relative clean.With gradually using up for fossil fuel, nuclear energy exists in recent years
Increasingly consequence is occupied in energy field.Safe utilization nuclear energy is always the research emphasis and focus in core field.
Design requirement is not achieved in the energy that nuclear reaction release occurs in reactor for nuclear fuel, cannot steadily provide energy
When be removed, referred to as spentnuclear fuel.It is weary from the spent fuel pond that the spent fuel removed in nuclear reactor would generally be stored in
Fuel still can persistently carry out decay and release a large amount of heat, need to can just be carried out in next step less than safety standard by being cooled to thermal discharge
Processing.When reactor shut-down, nuclear chain reaction also stops therewith, however since the β of decay constant decays, weary combustion
Material still can release a large amount of heat, and decay thermal power will continue to reduction slowly with the time.
The decay heat that spentnuclear fuel has needs to carry out long-term cooling in storage pool.When spentnuclear fuel pond is once grown
After time loses cooling accident, the temperature in pond can continue to increase, until boiling generates steam.When the cooling work(in spentnuclear fuel pond
In the case of capable of losing so that the cooling working medium in pond can constantly decline, when to drop to irradiated fuel assembly naked with air for liquid level
Leakage will have the risk of a large amount of radioactive substance releases of irradiated fuel assembly clad meltdown, while react and cause explosion
And fire, cause nuclear accident.So what we needed to solve is exactly that can constantly be exported weary in the case where not depending on external impetus
The decay heat of fuel tank, makes the temperature in spentnuclear fuel pond be maintained in safe range, while can be carried out to external heat exchanger
Safety, it is efficient cooling.To which system can also carry out spentnuclear fuel pond autonomous cooling in accidents such as power-off, ensure weary
The safety of fuel plant.
For having the waste heat constantly to decay in spentnuclear fuel pond, with advances in technology, we can be recycled,
It is to recycle the effective means of middle-low grade thermal energy using low-boiling-point organic compound as the Rankine cycle low-temperature electricity-generating technology of working medium, not only saves
It can lower consumption, moreover it is possible to bring considerable economic benefit for enterprise.It converts waste heat energy to electric energy, is to improve efficiency of energy utilization and drop
The effective way of low environment pollution.
Since Fukushima nuclear accident in 2011, spentnuclear fuel pond receives more and more attention, and safety problem becomes core money
Research emphasis in the utilization of source.The spentnuclear fuel pond of Fukushima nuclear power station is that the AP1000 based on the U.S. is built, and has centainly non-
Active cooling capacity, however, facts proved that, the cooling capacity that Fukushima nuclear power station copes with accident is also far from enough, realizes spentnuclear fuel
The long-term passive cooling in pond is particularly important.Westinghouse Electric is directed to long-term passive cooling, is proposed on the basis of AP1000
A kind of passive cooling scheme for arranging heating pipe battle array above spentnuclear fuel pond.And French Areva Ta company then proposes one kind and exists
The cooling scheme of separate heat pipe is arranged around weary pond to improve the cooling capacity in spentnuclear fuel pond.T.Fuchs, R.Trewin and
M.Reck et al. compared the Natural Circulation using individual event liquid and diphasic liquids in Areva Ta company heat pipe cooling system middle pipe
With the difference of the capacity of heat transmission.The country, in wide core Wang Yaodong, monitoring, the discharge steam etc. of Gong Aicheng et al. for spentnuclear fuel pond
Technique proposes a series of improvement project.The Wang Minglu of Shanghai Communications University has studied the non-energy of separate heat pipe in spentnuclear fuel pond
Dynamic cooling scheme, has affirmed its feasibility, and carried out a series of researchs for this large scale separate heat pipe.Zheng Wenlong etc.
People then has studied heat transfer free convection characteristic in this kind of spentnuclear fuel pond.
Invention content
The spentnuclear fuel pond of cooling working medium is different, and spentnuclear fuel pond of the present invention utilizes low boiling from traditional using water as by the present invention
The organic working medium of point is used as cooling working medium.Decay heat amount is absorbed using low boiling point organic working medium and generates superheated steam, to push away
Dynamic steam turbine, realizes the conversion of electric energy.It solves and safety is not carried out to heat exchanger in the case where depending on external impetus, it is high
The cooling of effect provides a kind of passive cooling in the spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology
System.
A kind of non-energy in spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology provided by the invention
It in dynamic cooling system, has the feature that, including spentnuclear fuel pond, the low boiling point organic working medium in pond absorbs spentnuclear fuel decay heat
Amount generates superheated steam；Steam turbine, heat exchanger, liquid reserve tank, cycle fluid pump, the flow being sequentially connected to by pipeline
Control valve, filter, generator have rotary shaft, wherein there is steam turbine output shaft, the output shaft to connect with rotary shaft
It connects, generator is driven rotation by steam turbine and generated electricity.
In a kind of the non-of the spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology provided by the invention
In active cooling system, which is characterized in that further include the skimming circuit being arranged in spentnuclear fuel pond, which includes being used for
Improve the purity of working medium and the skimmer of transparency in pond.
In addition, in a kind of spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology provided by the invention
Passive cooling system in, which is characterized in that further include filter, be arranged liquid reserve tank and cycle fluid pump between pipeline
In, for removing dust and impurity in ionized state in spentnuclear fuel pond.
In addition, in a kind of spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology provided by the invention
Passive cooling system in, which is characterized in that further include the chemistry and volume unit being connected with spentnuclear fuel pond, for weary
Fuel tank feeds certain density boron water, prevents the generation of chain reaction.
In addition, in a kind of spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology provided by the invention
Passive cooling system in, which is characterized in that further include equipment cooling circuit, a kind of scheme is wind-cooling heat dissipating cooling circuit,
Including finned air cooler and multiple fans；Another scheme is water-cooling cooling circuit, including sequentially by cooling line
Heat exchanger, water collector, the hot water recovery unit of connection.
In addition, in a kind of spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology provided by the invention
Passive cooling system in, which is characterized in that further include cycle fluid pump, be arranged at liquid reserve tank lower exit port, for will
Liquid reserve tank liquid cooled working medium smoothly flows back to spentnuclear fuel pond.
In addition, in a kind of spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology provided by the invention
Passive cooling system in, which is characterized in that further include the first water pump, be arranged between water cooling heat exchanger and tap water official website
Cooling line in；Second water pump, in the cooling line being arranged between water collector and hot water recovery unit, the first water pump,
Two water pumps, cycle fluid pump use the electric power that generator produces.
In addition, in a kind of spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology that invention provides
In passive cooling system, which is characterized in that further include flow control valve, is arranged in cycle fluid parallel connection of pumps bypass conduit,
When working medium pump cannot run well, for adjusting the liquid measure for flowing back to spentnuclear fuel pond using gravity.
In addition, in a kind of spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology provided by the invention
Passive cooling system in, which is characterized in that wherein, the position of liquid reserve tank is higher than spentnuclear fuel pond, when working medium pump cannot be normal
When operating, the liquid condensed working medium in liquid reserve tank can flow back to spentnuclear fuel pond under the effect of gravity.
The effect of invention
According to a kind of spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology involved in the present invention
In passive cooling system, including spentnuclear fuel pond, the low boiling point organic working medium in pond absorbs spentnuclear fuel and decays heat, generates overheat
Steam；The steam turbine that is sequentially connected to by pipeline, heat exchanger, liquid reserve tank, cycle fluid pump, flow control valve, filtering
Device, generator have rotary shaft, wherein steam turbine has an output shaft, the output shaft with rotating axis connection, generator by
Steam turbine drives rotation and generates electricity.
Because the passive cooling system in spentnuclear fuel pond according to the present invention by the cooling in spentnuclear fuel pond with it is existing organic
Working medium Rankine cycle low-temperature cogeneration technology combines, and low temperature Organic Rankine Cycle generation mode is used, by spentnuclear fuel
Waste heat is recycled, and does not have cost of material, so, technical scheme of the present invention can not only reduce the discharge capacity of pollutant,
And the utilization rate of the energy can be improved.
Description of the drawings
Fig. 1 is the spentnuclear fuel pond passive cooling system schematic diagram that air-cooled heat exchanger is carried in the embodiment of the present invention；With
And
Fig. 2 is the spentnuclear fuel pond passive cooling system schematic diagram that water cooling heat exchanger is carried in the embodiment of the present invention.
Specific implementation mode
It is real below in order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand
Example combination attached drawing is applied to a kind of the non-of spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology of the invention
It is specifically addressed in active cooling system.
Organic rankie cycle (Organic Rankine Cycle, abbreviation ORC)：It is to be replaced with low-boiling-point organic compound
Therrmodynamic system of the conventional steam as cycle fluid.The low enthalpy heat in, ORC system has higher in terms of recycling sensible heat
Efficiency, recycle more heats than water steam.ORC low-temperature electricity-generating technologies are namely based on the hair of organic rankie cycle
Electric system.High steam is generated after organic working medium heat absorption, pushing turbine or other expansion motive power machines drive generator operation hair
Electricity.Working medium portion of energy is converted into electric energy, and the condensed device of the low temperature and low pressure steam come out from steam turbine exchanges heat to be deposited at saturated liquid
In liquid reserve tank, the liquid working substance of storage is squeezed into and completes one cycle in evaporator by working medium pump.The technological break-through point is to study
Lower heat source temperature exchanges heat with organic working medium, to drive expanding machine acting to drive electrical power generators
Embodiment one
As shown in Figure 1, the passive cooling in the spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology
System 100 includes spentnuclear fuel pond, and the steam turbine being sequentially connected to by pipeline, liquid reserve tank, filter, follows at air-cooled heat exchanger
Ring working medium pump and generator, multiple fans, skimming circuit, chemistry and volume system.
Wherein, there is generator rotary shaft, steam turbine there is output shaft, the output shaft to generate electricity with axis connection is rotated
Machine is driven rotation by steam turbine and is generated electricity.Dotted line indicates supply line in figure.
In embodiment, heat exchanger uses air-cooled heat exchanger, in order to reinforce heat exchange efficiency, cooling velocity is improved, using wind
Fan drives the mode of Forced Air Convection heat exchange, multiple fans to be arranged by air-cooled heat exchanger.
The position of liquid reserve tank is higher than spentnuclear fuel pond, and the liquid refrigerant of liquid reserve tank can flow back to spentnuclear fuel under the effect of gravity
Pond.
Filter, for removing dust and impurity in ionized state in spentnuclear fuel pond.The liquid refrigerant warp come out from liquid reserve tank
Cross filter, in order to filter the fission product and corrosion product removed in spentnuclear fuel pond, dust in removal spentnuclear fuel pond and from
Sub- state impurity, the radioactive water in reduction spentnuclear fuel pond is gentle to maintain good visibility, purification spentnuclear fuel pond.
In order to ensure that cooling working medium is sufficient in spentnuclear fuel pond, ensures that liquid cooled working medium can smoothly flow back to spentnuclear fuel in time
Pond, liquid reserve tank exit are arranged cycle fluid and pump, and the electric power of working medium pump will be provided by generator herein, to the liquid in liquid reserve tank
Working medium provides pressure, is cooled down again to spentnuclear fuel to which working medium flows back to weary pond, so far forms and be not required under outer force effect
Cycle constitutes a complete passive spentnuclear fuel pond cooling system.
A skimming circuit is established on the surface in spentnuclear fuel pond, and two skimmers are fixed on pool wall, and the working medium in pond is passed through
It is returned in pond after skimmer filtering, it is therefore an objective to improve the purity and transparency of working medium.
Chemistry is connected with volume system with spentnuclear fuel pond, and purpose prevents chain to give weary pond to feed a certain concentration boron water
The generation of formula reaction.
Present system circulation process is, low in spentnuclear fuel pond using ORC (organic Rankine cycle) low-temperature cogeneration technology
The organic cooling working medium of boiling point absorbs spentnuclear fuel decay heat, generates superheated steam, steam enters turbine, under the driving of steam
Steam turbine outputting rotary power, to drive the effect of generator, generator, which acts on fan, forces cooling heat exchanger, increase to change
The thermal efficiency, and the extra electricity of generator can be used for life lighting, increase the utilization rate of the energy.Steam is condensed in heat exchanger
Liquid condensed working medium afterwards enters liquid reserve tank storage, and since the position of liquid reserve tank is higher than weary pond, liquid condensed working medium both can be
Spentnuclear fuel pond is flowed back under gravity, in order to ensure flow velocity and ensure that cooling working medium is sufficient in spentnuclear fuel pond, liquid reserve tank exit
Cycle fluid pump is filled, the electric power of working medium pump will be provided by generator herein, and pressure is provided to the liquid refrigerant in liquid reserve tank, from
And working medium flows back to weary pond and is cooled down again to spentnuclear fuel, so far forms the cycle being not required under outer force effect, composition one is complete
Whole passive spentnuclear fuel pond cooling system.
Embodiment two
As shown in Fig. 2, the passive cooling in the spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology
System 200 includes spentnuclear fuel pond, and the steam turbine being sequentially connected to by pipeline, liquid reserve tank, filter, follows at water cooling heat exchanger
Ring working medium pump and generator, skimming circuit, chemistry and volume system, equipment cooling circuit.
Wherein, there is generator rotary shaft, steam turbine there is output shaft, the output shaft to generate electricity with axis connection is rotated
Machine is driven rotation by steam turbine and is generated electricity.Dotted line indicates supply line in figure.
Cooling line is connected to tap water pipe network, and equipment cooling circuit includes the first water being sequentially connected to by cooling line
Pump, heat exchanger, water collector, the second water pump, hot water recovery unit, in embodiment, heat exchanger uses water cooling heat exchanger, catchments
Device is arranged in the lower part of water cooling heat exchanger.Since the cooling water that equipment cooling circuit uses comes from tap water pipe network, and water cooling
The heat exchange efficiency of heat exchanger is much higher than air-cooled heat exchanger, therefore improves its cooling rate.
The position of liquid reserve tank is higher than spentnuclear fuel pond, and the liquid condensed working medium in liquid reserve tank can flow back to weary under the effect of gravity
Fuel tank.
Filter, for removing dust and impurity in ionized state in spentnuclear fuel pond.The liquid refrigerant warp come out from liquid reserve tank
Filter is crossed, in order to filter the fission product and corrosion product removed in spentnuclear fuel pond, removes the dust and ionic state in weary pond
Impurity, the radioactive water in reduction spentnuclear fuel pond is gentle to maintain good visibility, purification spentnuclear fuel pond.
In order to ensure that cooling working medium is sufficient in spentnuclear fuel pond, ensures that liquid cooled working medium can smoothly flow back to spentnuclear fuel in time
Pond, liquid reserve tank exit are arranged cycle fluid and pump, and the electric power of working medium pump will be provided by generator herein, to the liquid in liquid reserve tank
Working medium provides pressure, is cooled down again to spentnuclear fuel to which working medium flows back to weary pond, so far forms and be not required under outer force effect
Cycle constitutes a complete passive spentnuclear fuel pond cooling system.
A skimming circuit is established on the surface in spentnuclear fuel pond, and two skimmers are fixed on pool wall, and the working medium in pond is passed through
It is returned in pond after skimmer filtering, it is therefore an objective to improve the purity and transparency of working medium.
Chemistry is connected with volume system with spentnuclear fuel pond, and purpose prevents chain to give weary pond to feed a certain concentration boron water
The generation of formula reaction.
Present system circulation process is, low in spentnuclear fuel pond using ORC (organic Rankine cycle) low-temperature cogeneration technology
The organic cooling working medium of boiling point absorbs spentnuclear fuel decay heat, generates superheated steam, steam enters turbine, under the driving of steam
Steam turbine outputting rotary power, to drive the effect of generator, cooling water to come from tap water pipe network, for cooling down water cooling heat exchange
Device, while in order to energy saving, recovery waste heat, the cooling water after heat exchange is heated up is transported to daily domestic water end, for people
Use, and the extra electricity of generator can be used for life lighting, increase the utilization rate of the energy.Steam is condensed in heat exchanger
Liquid condensed working medium afterwards enters liquid reserve tank storage, and since the position of liquid reserve tank is higher than spentnuclear fuel pond, liquid condensed working medium both may be used
To flow back to spentnuclear fuel pond under the effect of gravity, in order to ensure flow velocity and ensure that cooling working medium is sufficient in spentnuclear fuel pond, liquid reserve tank goes out
Cycle fluid pump is filled at mouthful, the electric power of working medium pump will be provided by generator herein, and pressure is provided to the liquid refrigerant in liquid reserve tank
Power again cools down spentnuclear fuel to which working medium flows back to weary pond, so far forms the cycle being not required under outer force effect, constitutes one
A complete passive spentnuclear fuel pond cooling system.
The effect of embodiment
A kind of spentnuclear fuel based on organic rankie cycle low-temperature cogeneration technology involved by the present embodiment
The passive cooling system in pond, including spentnuclear fuel pond, the low boiling point organic working medium in pond absorb spentnuclear fuel and decay heat, generated
Hot steam；The steam turbine that is sequentially connected to by pipeline, heat exchanger, liquid reserve tank, cycle fluid pump, flow control valve, mistake
Filter, generator have rotary shaft, wherein steam turbine has output shaft, and the output shaft is same to rotate axis connection, generator
Rotation is driven by steam turbine and is generated electricity.
Because the passive cooling system in spentnuclear fuel pond according to the present invention by the cooling in spentnuclear fuel pond with it is existing organic
Working medium Rankine cycle low-temperature cogeneration technology combines, and low temperature Organic Rankine Cycle generation mode is used, more than industry
Heat is recycled, and does not have cost of material, so, technical scheme of the present invention can not only reduce the discharge capacity of pollutant, and
And the utilization rate of the energy can be improved..
In addition, the forced-convection heat transfer that fan drives air-flow is used in the air-cooled heat exchanger type of cooling of the present embodiment,
To improve cooling rate.
Further, in the water cooling heat exchanger type of cooling of the present embodiment, cooling water comes from tap water pipe network, and water cooling
The heat exchange efficiency of heat exchanger is much higher than air-cooled heat exchanger, improves its cooling rate.
Further, in the water cooling heat exchanger type of cooling of the present embodiment, recovery waste heat, the tap water after heat exchange is heated up
It is transported to daily domestic water end, it is for people to use.
Further, the present embodiment is by the cooling in spentnuclear fuel pond and existing organic rankie cycle low-temperature cogeneration skill
Art combines, and can get preferable Social benefit and economic benefit, while in order to reach the maximization of using energy source, will store up
The electric energy deposited is in addition to driving fan, outside the operation of water pump etc., is also transported to the use of household electricity end.
Further, the spentnuclear fuel pond based on organic rankie cycle low-temperature cogeneration technology of the present embodiment is non-
Active cooling system, it is different from traditional spentnuclear fuel pond, it absorbs waste heat using low-boiling organic working medium and generates superheated steam, to
Drive steam turbine rotation.The difference in height of liquid reserve tank and spentnuclear fuel pond, when working medium pump cannot run well, liquid reserve tank are utilized simultaneously
In liquid refrigerant can also rely on the gravity reflux of itself to weary pond in.
Further, the present embodiment is sufficient in order to ensure in spentnuclear fuel pond cooling working medium, ensure liquid cooled working medium energy and
When smoothly flow back to spentnuclear fuel pond, it is contemplated that after liquid reserve tank plus cycle fluid pump, this working medium pump provide electricity by generator
Power is powered without external power, to reach passive circulating cooling mode, so this system is not necessarily to external power completely
It provides, the cooling of spentnuclear fuel itself can be completed under conditions of power-off and accident, substantially increases the safety of cooling system.
The above embodiment is the preferred case of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. a kind of passive cooling system in the spentnuclear fuel pond based on organic rankie cycle, which is characterized in that including：
Spentnuclear fuel pond is filled with enough liquid low boiling point organic working mediums in spentnuclear fuel pond, and the organic working medium in pond absorbs spentnuclear fuel and declines
Become heat, generates superheated steam；
Steam turbine, heat exchanger, liquid reserve tank, cycle fluid pump, the flow control valve being sequentially connected to by pipeline；
Generator has rotary shaft,
Wherein, the steam turbine has output shaft, and the output shaft is with the rotation axis connection, and the generator is by the steaming
Steam turbine drives rotation and generates electricity.
2. a kind of passive cooling system in spentnuclear fuel pond based on organic rankie cycle according to claim 1,
It is characterized in that, further including：
Skimming circuit in the spentnuclear fuel pond is set, which includes the purity and transparency for improving pool inner water
Skimmer.
3. a kind of passive cooling system in spentnuclear fuel pond based on organic rankie cycle according to claim 1,
It is characterized in that, further including：
Filter is arranged in the pipeline between the liquid reserve tank and cycle fluid pump,
The filter, for removing dust and impurity in ionized state in the spentnuclear fuel pond.
4. a kind of passive cooling system in spentnuclear fuel pond based on organic rankie cycle according to claim 1,
It is characterized in that, further including：
The chemistry and volume unit being connected with the spentnuclear fuel pond, for feeding certain density boron to the spentnuclear fuel pond
Water prevents the generation of chain reaction.
5. a kind of passive cooling system in spentnuclear fuel pond based on organic rankie cycle according to claim 1,
It is characterized in that, further including：
Equipment cooling circuit scheme 1, including air cooling heat exchanger and multiple fans for radiating.
6. a kind of passive cooling system in spentnuclear fuel pond based on organic rankie cycle according to claim 1,
It is characterized in that, further including：
Equipment cooling circuit scheme 2 includes that the water-cooled heat exchanger, water collector, hot water being sequentially connected to by cooling line return
Receiving apparatus,
Wherein, the cooling line is connected to tap water pipe network,
The heat exchanger uses water cooling heat exchanger, the water collector to be arranged in the lower part of the water cooling heat exchanger.
7. a kind of passive cooling system in spentnuclear fuel pond based on organic rankie cycle according to claim 1,
It is characterized in that, further including：
Cycle fluid pumps, and is arranged at liquid reserve tank lower exit port, for liquid reserve tank liquid cooled working medium smoothly to be flowed back to spentnuclear fuel
Pond.
8. a kind of passive cooling system in spentnuclear fuel pond based on organic rankie cycle according to claim 6,
It is characterized in that, further including：
First water pump is arranged in the cooling line between the water cooling heat exchanger and the tap water official website；
Second water pump, in the cooling line being arranged between the water collector and the hot water recovery unit,
First water pump, second water pump, the cycle fluid pump the electric power produced using the generator.
9. a kind of passive cooling system in spentnuclear fuel pond based on organic rankie cycle according to claim 1,
It is characterized in that, further including：
Flow control valve is arranged in the cycle fluid parallel connection of pumps bypass conduit, when working medium pump cannot run well, is used for
Adjust the liquid measure that spentnuclear fuel pond is flowed back to using gravity.
10. a kind of passive cooling system in spentnuclear fuel pond based on organic rankie cycle according to claim 1,
It is characterized in that：
Wherein, the position of the liquid reserve tank is higher than the spentnuclear fuel pond, when working medium pump cannot run well, in the liquid reserve tank
Liquid condensed working medium can flow back to the spentnuclear fuel pond under the effect of gravity.
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| CN110274501A (en) * | 2019-05-24 | 2019-09-24 | 中国核电工程有限公司 | A kind of spent nuclear fuel in nuclear power plant pond cooling system based on passive separate type heat pipe exchanger |
| CN110534222A (en) * | 2019-08-26 | 2019-12-03 | 中广核陆丰核电有限公司 | A kind of nuclear safety control method after nuclear power unit complete unloading |
| CN111963882A (en) * | 2020-07-08 | 2020-11-20 | 福建省气柜设备安装有限公司 | Waste heat recovery device of steam trap |
| CN113871044A (en) * | 2021-08-12 | 2021-12-31 | 中广核研究院有限公司 | Cooling control method and related equipment |
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