CN103021483A - Auxiliary heating system for liquid-metal-cooled natural circulation reactor - Google Patents

Auxiliary heating system for liquid-metal-cooled natural circulation reactor Download PDF

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Publication number
CN103021483A
CN103021483A CN2012105916551A CN201210591655A CN103021483A CN 103021483 A CN103021483 A CN 103021483A CN 2012105916551 A CN2012105916551 A CN 2012105916551A CN 201210591655 A CN201210591655 A CN 201210591655A CN 103021483 A CN103021483 A CN 103021483A
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China
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nitrogen
reactor
input pipe
tank
primary tank
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CN2012105916551A
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Chinese (zh)
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CN103021483B (en
Inventor
王桂梅
赵鹏程
陈钊
周涛
吴宜灿
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中国科学院合肥物质科学研究院
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Abstract

The invention discloses an auxiliary heating system for a liquid-metal-cooled natural circulation reactor. The auxiliary heating system comprises a nitrogen storage tank (1), a filter (2), a gas heater (3), a hot nitrogen input pipe (4), a main container (5), a safety container (6), gas extractors (7), pipelines and valves, wherein the pipelines and the valves are used for interconnecting devices. The system has the advantages that the function that a liquid-metal coolant in a liquid metal pool type reactor is subjected to auxiliary heating from the outside of the main container of the reactor is realized, the system is simple in structure, components in the reactor are not required for being added or started during operation, so that liquid metal in the main container can form micro natural circulation after the operation of the system, and meanwhile, the reliability and safety of the reactor can be effectively improved.

Description

A kind of auxiliary heating system for liquid metal cooling natural circulation reactor
Technical field
The present invention relates to a kind of liquid metal heating system, particularly a kind of auxiliary heating system of liquid metal cooling natural circulation reactor.
Background technology
Liquid metal cooling pond formula natural circulation reactor adopts liquid metal as cooling medium, and when the power of reactor is very low, the heat that reactor core produces will be not enough to keep the temperature of the liquid metal coolant in the major loop more than fusing point.If cooling medium one solidifies, will cause serious destruction to system and the equipment of reator body.Therefore, when reactor capability is very low, must heat by the liquid towards coolant metal, to maintain that it is liquid state.
At present, the auxiliary heating system of liquid-metal reactor mainly contains following several mode:
Wherein a kind of mode is with the auxiliary heating mode of China Experiment Fast Reactor, the intermediate loop that secondary circuit and accident afterheat are discharged system has been wrapped in the electric tracing well heater, when reactor power level is very low, the electric tracing well heater heats the sodium of secondary circuit and intermediate loop, then by main heat exchanger and independent heat exchanger, with the sodium in the heat transferred primary tank, require simultaneously main pump to keep operating condition, to keep the sodium circulation in the heap.But the firing equipment of this mode is arranged in the primary tank, and is positioned at cooling medium top, pond, has therefore increased the complicacy of heap inner structure; This mode requires main pump and the running of secondary pump low-power simultaneously, has not only reduced reliability and the security of system, nor is applicable to the reactor that Main Coolant adopts the natural circulation form.
Another kind of mode is with the type of heating of the lead bismuth alloy cooling fast reactor of Belgian Accelerator driven, to have placed a coolant conditioning system in primary tank bottom in this mode, electric heater is installed in the system, when Shutdown, is used for heating plumbous bismuth cooling medium to the temperature that needs.But the heating arrangement of this mode is installed in the primary tank, has not only increased the complicacy of heap inner structure, and systems inspection and maintenance are also inconvenient.
In addition, the gas heating system that China Experiment Fast Reactor adopts is to adopt argon gas that primary tank, primary tank interior equipment component and reactor safety container are carried out preheating before primary tank fills sodium, after achieving the goal, therefore this system is removed, and can not play the effect of auxiliary heating after that reactor shutdown.
Summary of the invention
It is simple to the invention provides a kind of system architecture, and it is convenient to start, and satisfies the auxiliary heating system of liquid metal cooling natural circulation bath-type reactor demand.
The present invention has realized carrying out piling interior liquid metal coolant the function of auxiliary heating outside the liquid-metal reactor primary tank, need not during operation increases or start in-pile component, but the reliability of Effective Raise reactor and security.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of auxiliary heating system for liquid metal cooling natural circulation reactor comprises the pipeline and the valve that link to each other between nitrogen hold-up tank, filtrator, gas heater, hot nitrogen input pipe, safety container, primary tank, air pump and the equipment; The nitrogen hold-up tank links to each other with filtrator, connects afterwards gas heater, finally links to each other with the hot nitrogen input pipe; The mounting hole of a hot nitrogen input pipe is arranged on the heap top cover, and this pipe outlet is positioned at the ring cavity bottom of primary tank and safety container formation; The mounting hole of four air pumps is evenly arranged on the heap top cover, will extract out through the nitrogen after the heat interchange in the ring cavity, and air pump is the major impetus of nitrogen circulation, finishes the closed cycle of nitrogen; Wherein,
When being reduced to, reactor capability is not enough to keep the temperature of liquid metal when fusing point is above, the outlet valve of nitrogen hold-up tank is opened, system starts, nitrogen flows in the filtrator from hold-up tank, heat by gas heater after filtering, under the air pump effect, the nitrogen of heating enters the hot nitrogen input pipe; Hot nitrogen flows out from the input pipe outlet, in annular compartment primary tank and safety container is heated from bottom to top, finally extracts out by being evenly arranged four air pumps that are installed in parallel connection on the heap top cover, finishes the process of a nitrogen closed cycle.
Wherein, system is arranged on the reactor primary tank outside, has avoided system is directly placed in the container and the increase of the reactor inner structure complicacy that causes.
Wherein, the hot nitrogen input pipe is positioned at the ring cavity of primary tank and safety container formation, and the mounting hole of hot nitrogen input pipe is arranged on the heap top cover, and its outlet is positioned at the ring cavity bottom of primary tank and safety container formation.
Principle of the present invention is:
A kind of auxiliary heating system for liquid metal cooling natural circulation reactor comprises the pipeline and the valve that link to each other between nitrogen hold-up tank, filtrator, gas heater, hot nitrogen input pipe, primary tank, safety container, air pump and the equipment.System is a closed cycle structure, and a hot nitrogen input pipe is in the annular compartment between heap top cover insertion primary tank and the safety container, and the installing port of 4 air pumps is evenly arranged on the heap top cover.
The hot nitrogen input pipe passes into the nitrogen of heating the cavity bottom of primary tank and safety container formation, hot nitrogen is bottom-up to flow, and by convection heat transfer primary tank is heated, and extracts chamber out by air pump at last, enter filtrator by relevant pipeline again, finish a cyclic process.This system layout need not during operation to start equipment in the heap outside primary tank, but Effective Raise Security of the system and reliability.
Compared with prior art, advantage of the present invention is:
1. the hot nitrogen input pipe is installed in the annular compartment of primary tank and safety container formation, need not to increase in-pile component, so system architecture is simple, need not to start in-pile component during operation, but the reliability and security of Effective Raise system.
2. when bulk temperature is higher than the liquid metal fusing point in satisfying heap, system makes the liquid metal of close primary tank bottom in the heap absorb larger heat, bottom along primary tank makes progress, near the heat that liquid metal absorbs the primary tank reduces gradually, cooling medium produces density difference about causing in the primary tank, make liquid metal coolant in primary tank, form the liquid form of little Natural Circulation, the uniformity of temperature profile that is conducive to liquid metal in the container has avoided the liquid metal coolant in the container to cross low solidifying because of local temperature.
Description of drawings
Fig. 1 is the system architecture synoptic diagram;
Fig. 2 is that hot nitrogen input pipe and air pump mounting hole are at the arrangenent diagram of heap top cover.
Among the figure, 1 is that nitrogen hold-up tank, 2 is that filtrator, 3 is that gas heater, 4 is that hot nitrogen input pipe, 5 is that safety container, 6 is that primary tank, 7 is air pump.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:
This system comprises pipeline and the valve that links to each other between nitrogen hold-up tank 1, filtrator 2, gas heater 3, hot nitrogen input pipe 4, safety container 5, primary tank 6, air pump 7 and the equipment.Nitrogen hold-up tank 1 links to each other with filtrator 2, connects afterwards gas heater 3, finally links to each other with hot nitrogen input channel 4.The mounting hole of a hot nitrogen input pipe 4 is arranged on the heap top cover, and this pipe outlet is positioned at the ring cavity bottom of primary tank 6 and safety container 5 formation.The mounting hole of four air pumps 7 is evenly arranged on the heap top cover, and the nitrogen through heat exchange in the ring cavity is extracted out, finishes nitrogen closed cycle process.
When reactor capability is reduced to the temperature that is not enough to keep liquid metal when fusing point is above, the outlet valve of nitrogen hold-up tank 1 is opened, and system starts.Nitrogen flows in the filtrator 2 from hold-up tank 1, heats by gas heater 3 after filtering, and under air pump 7 effects, the nitrogen of heating enters the hot nitrogen input pipe; Hot nitrogen flows out from the input pipe outlet, in annular compartment primary tank and safety container is heated from bottom to top, finally extracts out by being evenly arranged four air pumps 7 that are installed in parallel connection on the heap top cover, finishes the process of a nitrogen closed cycle.
Filtrator 2 in the system can be removed the interior dust of blower fan and foreign material etc., in order to avoid booty contaminated system pipeline and equipment.Gas heater 3 is main thermals source of heated nitrogen.Air pump 7 is major impetus of system's nitrogen circulation, and four air pump mounting arrangements are even, can form symmetrical nitrogen flow field during parallel running in ring cavity, can strengthen heat-transfer effect.
Compared with prior art, this system architecture is simple, and is easy for installation; Equipment is arranged in outside the primary tank, need not during operation to start equipment in the heap, but Effective Raise Security of the system and reliability; System can make the liquid metal in the primary tank form the liquid form of little Natural Circulation, is applicable to the auxiliary heating system that liquid metal cools off natural circulation reactor; System adopts the nitrogen closed cycle, can prevent the dissipation of radiomaterial, also can reduce the operating cost of system.
The part that the present invention does not elaborate belongs to techniques well known.
Although the above is described the illustrative embodiment of the present invention; so that the technician of present technique neck understands the present invention; but should be clear; the invention is not restricted to the scope of embodiment; to those skilled in the art; as long as various variations appended claim limit and the spirit and scope of the present invention determined in, these variations are apparent, all utilize innovation and creation that the present invention conceives all at the row of protection.

Claims (3)

1. one kind is used for the auxiliary heating system that liquid metal cools off natural circulation reactor, it is characterized in that, comprise the pipeline and the valve that link to each other between nitrogen hold-up tank (1), filtrator (2), gas heater (3), hot nitrogen input pipe (4), safety container (5), primary tank (6), air pump (7) and the equipment; Nitrogen hold-up tank (1) links to each other with filtrator (2), connects afterwards gas heater (3), finally links to each other with hot nitrogen input pipe (4); The mounting hole of a hot nitrogen input pipe (4) is arranged on the heap top cover, and this pipe outlet is positioned at the ring cavity bottom of primary tank (6) and safety container (5) formation; The mounting hole of four air pumps (7) is evenly arranged on the heap top cover, will extract out through the nitrogen after the heat interchange in the ring cavity, and air pump (7) is the major impetus of nitrogen circulation, finishes the closed cycle of nitrogen;
Wherein, when being reduced to, reactor capability is not enough to keep the temperature of liquid metal when fusing point is above, the outlet valve of nitrogen hold-up tank (1) is opened, system starts, nitrogen flows in the filtrator (2) from hold-up tank (1), heat by gas heater (3) after filtering, under air pump (7) effect, the nitrogen of heating enters the hot nitrogen input pipe; Hot nitrogen flows out from the input pipe outlet, in annular compartment primary tank and safety container is heated from bottom to top, finally extracts out by being evenly arranged four air pumps (7) that are installed in parallel connection on the heap top cover, finishes the process of a nitrogen closed cycle.
2. a kind of auxiliary heating system for liquid metal cooling natural circulation reactor according to claim 1, it is characterized in that, system is arranged on reactor primary tank (6) outside, has avoided system is directly placed in the container and the increase of the reactor inner structure complicacy that causes.
3. a kind of auxiliary heating system for liquid metal cooling natural circulation reactor according to claim 1, it is characterized in that hot nitrogen input pipe (4) is positioned at the ring cavity of primary tank and safety container formation, the mounting hole of hot nitrogen input pipe (4) is arranged on the heap top cover, and its outlet is positioned at the ring cavity bottom of primary tank (6) and safety container (5) formation.
CN201210591655.1A 2012-12-31 2012-12-31 A kind of auxiliary heating system for liquid metal cooling natural circulation reactor CN103021483B (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103730172A (en) * 2014-01-12 2014-04-16 中国科学技术大学 Auxiliary heating system in liquid state heavy metal cooling natural circulating pool type reactor
CN103730171A (en) * 2014-01-12 2014-04-16 中国科学技术大学 Auxiliary heating system of liquid heavy metal cooling natural circulating pool-type reactor
CN104409115A (en) * 2014-12-17 2015-03-11 中国科学院合肥物质科学研究院 Complex device for auxiliary heating and waste heat discharging of pool-type liquid heavy metal cooled reactor
CN104464842A (en) * 2014-12-22 2015-03-25 中国科学院合肥物质科学研究院 Accelerator driven lead bismuth cooling subcritical traveling wave reactor
CN104599727A (en) * 2015-01-26 2015-05-06 中国科学院工程热物理研究所 Liquid metal and high-pressure gas flowing heat exchanging device and liquid metal and high-pressure gas flowing heat exchanging method
CN106409353A (en) * 2016-09-26 2017-02-15 南华大学 Gas lift-based liquid metal cooling pool-type reactor multifunctional reactor internal thermal separation system
CN106847350A (en) * 2017-02-13 2017-06-13 中国科学院合肥物质科学研究院 A kind of liquid-metal cooled reactor integrated test set
CN106847348A (en) * 2017-01-19 2017-06-13 清华大学天津高端装备研究院 A kind of ADS containment systems
CN110068138A (en) * 2019-04-26 2019-07-30 西安交通大学 A kind of liquid metal sodium direct-type high power heating system and heating means
CN110959182A (en) * 2017-07-24 2020-04-03 俄罗斯联邦诺萨顿国家原子能公司 Method for establishing natural circulation of liquid metal coolant in fast neutron reactor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223210A (en) * 1991-08-16 1993-06-29 General Electric Company Passive cooling system for liquid metal cooled nuclear reactors with backup coolant flow path
CN201126712Y (en) * 2007-09-30 2008-10-01 中国原子能科学研究院 Gas heating system for natrium cold rapid reactor container
CN102782768A (en) * 2010-04-21 2012-11-14 株式会社东芝 Liquid metal cooled reactor and heat removal method for same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223210A (en) * 1991-08-16 1993-06-29 General Electric Company Passive cooling system for liquid metal cooled nuclear reactors with backup coolant flow path
CN201126712Y (en) * 2007-09-30 2008-10-01 中国原子能科学研究院 Gas heating system for natrium cold rapid reactor container
CN102782768A (en) * 2010-04-21 2012-11-14 株式会社东芝 Liquid metal cooled reactor and heat removal method for same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
马子云等: "反应堆气体加热系统", 《块堆主热传输系统及辅助系统》, 31 October 2011 (2011-10-31) *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103730172B (en) * 2014-01-12 2016-04-13 中国科学技术大学 Auxiliary heating system in a kind of liquid heavy metal cooling natural circulation bath-type reactor
CN103730171A (en) * 2014-01-12 2014-04-16 中国科学技术大学 Auxiliary heating system of liquid heavy metal cooling natural circulating pool-type reactor
CN103730172A (en) * 2014-01-12 2014-04-16 中国科学技术大学 Auxiliary heating system in liquid state heavy metal cooling natural circulating pool type reactor
CN103730171B (en) * 2014-01-12 2016-03-02 中国科学技术大学 A kind of liquid heavy metal cooling natural circulation bath-type reactor auxiliary heating system
CN104409115A (en) * 2014-12-17 2015-03-11 中国科学院合肥物质科学研究院 Complex device for auxiliary heating and waste heat discharging of pool-type liquid heavy metal cooled reactor
CN104464842B (en) * 2014-12-22 2017-02-22 中国科学院合肥物质科学研究院 Accelerator driven lead bismuth cooling subcritical traveling wave reactor
CN104464842A (en) * 2014-12-22 2015-03-25 中国科学院合肥物质科学研究院 Accelerator driven lead bismuth cooling subcritical traveling wave reactor
CN104599727A (en) * 2015-01-26 2015-05-06 中国科学院工程热物理研究所 Liquid metal and high-pressure gas flowing heat exchanging device and liquid metal and high-pressure gas flowing heat exchanging method
CN106409353B (en) * 2016-09-26 2018-09-07 南华大学 It is a kind of based on gaslift liquid metal cooling the multi-functional heap of pool reactor in hot separating system
CN106409353A (en) * 2016-09-26 2017-02-15 南华大学 Gas lift-based liquid metal cooling pool-type reactor multifunctional reactor internal thermal separation system
CN106847348A (en) * 2017-01-19 2017-06-13 清华大学天津高端装备研究院 A kind of ADS containment systems
CN106847348B (en) * 2017-01-19 2018-11-13 清华大学天津高端装备研究院 A kind of ADS containment systems
CN106847350A (en) * 2017-02-13 2017-06-13 中国科学院合肥物质科学研究院 A kind of liquid-metal cooled reactor integrated test set
CN106847350B (en) * 2017-02-13 2017-12-12 中国科学院合肥物质科学研究院 A kind of liquid-metal cooled reactor integrated test set
CN110959182A (en) * 2017-07-24 2020-04-03 俄罗斯联邦诺萨顿国家原子能公司 Method for establishing natural circulation of liquid metal coolant in fast neutron reactor
US10937558B2 (en) 2017-07-24 2021-03-02 State Atomic Energy Corporation “Rosatom” On Behalf Of The Russian Federation Method of launching natural circulation of liquid metal coolant of a fast neutron nuclear chain reactor
CN110068138A (en) * 2019-04-26 2019-07-30 西安交通大学 A kind of liquid metal sodium direct-type high power heating system and heating means
CN110068138B (en) * 2019-04-26 2020-05-15 西安交通大学 Direct high-power heating system and method for liquid sodium metal

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