CN107910079A - Swimmer's pool heat supplying nuclear reactor pond inner structure and fuel handling method - Google Patents

Swimmer's pool heat supplying nuclear reactor pond inner structure and fuel handling method Download PDF

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Publication number
CN107910079A
CN107910079A CN201711060383.1A CN201711060383A CN107910079A CN 107910079 A CN107910079 A CN 107910079A CN 201711060383 A CN201711060383 A CN 201711060383A CN 107910079 A CN107910079 A CN 107910079A
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Prior art keywords
pond
water
air seal
seal chamber
reactor
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CN201711060383.1A
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Chinese (zh)
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田嘉夫
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    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C15/00Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/02Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
    • G21C15/12Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from pressure vessel; from containment vessel
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C13/00Pressure vessels; Containment vessels; Containment in general
    • G21C13/02Details
    • G21C13/028Seals, e.g. for pressure vessels or containment vessels
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C15/00Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/18Emergency cooling arrangements; Removing shut-down heat
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C19/00Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/19Reactor parts specifically adapted to facilitate handling, e.g. to facilitate charging or discharging of fuel elements
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C9/00Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
    • G21C9/004Pressure suppression
    • 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

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)

Abstract

The present invention relates to a kind of swimmer's pool heat supplying nuclear reactor pond inner structure and fuel handling method, including pond, reactor core, control rod, heat exchanger and circulating pump, reactor core is placed in basin bottom, control rod is placed in reactor core, heat exchanger and circulating pump are placed in outside pond, the water outlet of heat exchanger is connected by circulating pump and water, the water intake end of heat exchanger is connected with reactor core, it is characterized in that, depth of water is 10 60 meters in the pond, pipeline is equipped with air seal chamber in pond, the air seal chamber can keep recirculated water and water to isolate, and excessive gas in circulation loop can be discharged at any time, it is to maintain one of important measures of reactor high level security.Simple and flexible is opened and resetted to the head cover of air seal chamber, can remote-controlled operation under water, transport for the shielding of irradiated fuel assembly and deep water and provide advantage.

Description

Swimmer's pool heat supplying nuclear reactor pond inner structure and fuel handling method
Technical field:
The present invention relates to a kind of swimmer's pool heat supplying nuclear reactor pond inner structure and fuel handling method, belong to nuclear reactor technology Field.
Background technology:
Swimmer's pool heat supplying nuclear reactor is a kind of low-temperature heat supply reactor, and this reactor works at a lower temperature, The thermal energy that nuclear fission produces is directly fed into low temperature user, its structure is simple, and it is easy to build, and cost is relatively low, but need compared with High security, reliability and operability.There are a variety of designs at present, closest with the present invention is Chinese invention patent CN85100044, its feature is to utilize the hydrostatic pressure compared with swimmer's pool to improve core exit water temperature, and sets heat to hand in pond Parallel operation, whole output powers of reactor are set out by temperature difference driving Natural Circulation.Natural Circulation carrying capacity is limited, this design It is only applicable to the low-temperature heat supply reactor of smaller power.Closest another kind is designed as Chinese invention patent with the present invention, Application No. 90108540.5, its main feature is that the heat exchanger and circulating pump of swimmer's pool process heat reactor are installed on outside pond, is followed for circuit Ring cooling type, installs vent plug in pond on pipeline.The cooling of its power relies on forced circulation, and when circulating pump stalls, vent plug is automatic Open, the type of cooling is converted into the Natural Circulation that water directly cools down residual heat of nuclear core.But when reply power-off is when emergency episode, gas Can the conversion performance of plug meet the transient requirements of Core cooling, need experimental verification.The closest another item with the present invention Chinese invention patent 011310995, the heat supplying nuclear reactor with forced-circulation cooling deep water comprising Natural Circulation, it is followed in circuit On the basis of ring cooling technology, in the case of the emergency episodes such as power-off, it is not necessary to which vent plug just can obtain reliably natural circulation cooling Ability and meet reactor core transient state cooling require.Even if without the feelings of any shutdown measure (control rod falls or boron water injects) Under condition, it is anti-to drastically increase water cooling there is a possibility that reactor declines power and is transferred to hot shutdown condition automatically for its transient response Answer the security of heap.Moreover, due to being provided with inertia water tank on circulation loop, in a simple and reliable way, instead of The function of circulating pump flying wheel.
The content of the invention:
It is an object of the invention to design a kind of swimmer's pool heat supplying nuclear reactor pond inner structure and fuel handling method, to existing Technical pattern makes improvement, using conventional circulating pump, heat exchanger, clad lining concrete swimmer's pool, control rod driving machine The equipment such as structure, it is ensured that in the case of forced circulation and natural circulation cooling, the transient state particularly in the conversion of two kinds of circulating coolings During, be not in the special pond inner structure that gas hinders flowing, disclose this device, it is ensured that reactor is high-caliber can By property and security.
The swimmer's pool heat supplying nuclear reactor pond inner structure and fuel handling method that the present invention designs, including pond, reactor core, control Rod, heat exchanger and circulating pump, reactor core are placed in basin bottom, and control rod is placed in reactor core, and heat exchanger and circulating pump are placed in water Outside pond, the water outlet of heat exchanger is connected by circulating pump and water, and water intake end and the reactor core of heat exchanger are connected, it is special Sign is that depth of water is 10-60 meters in the pond, and pipeline is equipped with air seal chamber, the air seal in pond Chamber can discharge excessive gas at any time.
Above-mentioned reactor can also further include air seal chamber and is made of air seal chamber head cover and lower part socket, two parts For socket fitting type structure.The air seal chamber socket fitting type structure, can open and close in deep water medium and long distance, and utilize gas Annular seal space keeps recirculated water and water isolation.
Above-mentioned reactor can also further include supply air seal chamber gas compressed air system, the system outside pond, There is connecting tube to be connected with air seal chamber, there is charge valve and vent valve on connecting line.
Above-mentioned reactor can also further include the head cover that the pipelines such as a plurality of control rod guide pipe pass through air seal chamber, and It is connected with air seal chamber top seal.
Above-mentioned reactor, which can also further include air seal intracavitary, upper and lower level sensor.
Above-mentioned reactor can also be further included when the component of the pipeline such as air seal chamber head cover and control rod guide pipe composition After entirety is removed, in pond in the case of low water level, the handling of reactor fuel component and ex-situ operations are carried out.
Above-mentioned reactor can also be additionally included in full-water level in pond and remove air seal chamber head cover and control rod guiding In the case of tube assembly, transfer operation in irradiated fuel assembly depth pond is carried out, makes irradiated fuel assembly that there is underwater transport and water screen The condition covered.
Swimmer's pool heat supplying nuclear reactor cooling water is to be under different temperatures and different pressures to circulate, during normal operation, by Change in temperature and pressure, at any time may bubbing.In abnormal cases, it may appear that local water temperature over-high and vaporization phenomenon, Low pressure bubble volume is larger, and the gas in pipeline can influence or even hinder flowing, it is necessary to discharge at any time in circulation loop Excessive gas.The gas produced in cooling cylinder and the pipeline of its upper part, can be discharged by inertia water tank.But in reactor core and In its upper part pipeline, recirculated water is in heating and pressure reduction, easily produces gas (or steam).Therefore, gas of the invention Annular seal space is exactly to discharge excessive gas at any time and design.
Moreover, the air seal chamber that the present invention designs is in the position that fuel assembly handling transhipment needs to pass through, Therefore the head cover of the air seal chamber can be opened and closed in deep water medium and long distance, be carried for transport of the spentnuclear fuel under profundal zone For advantage.
The swimmer's pool heat supplying nuclear reactor pond inner structure and fuel handling method, its advantage that the present invention designs are as follows:
1st, reactor deep water pool surface is normal pressure, cold by Natural Circulation by loop type forced circulation cooled reactor power But reactor waste, cooling water circulate under different temperatures and different pressures, are heating up and possible bubbing in pressure reduction, The air seal chamber design of the present invention can discharge excessive gas in circuit at any time;
2nd, in the case of the emergency episodes such as power-off, from forced circulation into natural circulation transient, lost in shutdown measure During effect, it may appear that local water temperature over-high and vaporization phenomenon, air seal chamber of the invention design can discharge steam at any time, not hinder Liquid flowing is filled in, this is that reactor then declines power and is transferred to the necessary condition of hot shutdown condition automatically, is to maintain reactor One of important measures of high-level security;
3rd, air seal chamber of the invention is after air bleeding valve is opened, intracavity gas discharge, rises the inside and outside nature that formed of cylinder and follows Ring cools down the circuit of reactor core, can be with pool water within dehydration, in the case that water level reduces, or the low water level in reactor fuel replacement operation Period, keeps the natural circulation cooling of residual heat of nuclear core;
4th, it is simple socket fitting type structure between air seal chamber head cover of the invention and rising cylinder, in the fuel handling phase Between, can be with pool water within full-water level in the case of, by the pipeline such as air seal chamber head cover and control rod guide pipe composition component (under End may have radioactivity), integral hoisting and other positions are moved to, after water level is down to low water level, staff can examine in pond By the rising cylinder of opening on equating platform, the handling of reactor fuel component and operation of reloading are carried out;
5th, after the completion of the operation of reactor fuel component, swimmer's pool can add water to full-water level, will be weary using the condition of deep water Fuel assembly is removed outside pond below the water surface, then again by the air seal chamber head cover of the present invention with and control rod guide pipe etc. manage The component of road composition is moved back to original position, bell and spigot frame facilitate it is feasible, and can be after air seal chamber be recovered, inside and outside holding circulation loop Air-tight state.
Brief description of the drawings:
Fig. 1 is the swimmer's pool heat supplying nuclear reactor pond inner structure schematic diagram that the present invention designs.
Fig. 2 is the pool gas annular seal space and control rod guide pipe component structure diagram that the present invention designs.
Fig. 3 is to remove structure diagram after air seal chamber head cover.
Fig. 4 is a fuel handling embodiment of patent of the present invention.
In Fig. 1~Fig. 4:1 is concrete swimmer's pool, and 2 be reactor core, and 3 be control rod, and 4 be decay cylinder, and 5 be air seal Chamber connecting tube, 6 be heat exchanger, and 7 be circulating pump, and 8 be cooling cylinder outlet circulation line, and 9 be inertia water tank, and 10 be row Air valve, 11 be charge valve, and 12 be water cooling tower, and 13 be control rod drive mechanism, and 14 be pool top cover, and 15 be underwater interlayer, 16 be water cooling heat exchanger, and 17 be air seal chamber head cover, and 18 be inspection platform in pond, and 19 be to rise cylinder, and 20 be gas Liquid level under annular seal space, 21 be liquid level on air seal chamber, and 22 be control rod guide pipe cross member, and 23 be that control rod guide pipe is indulged To connecting rod, 24 be air seal chamber plenum space, and 25 be level sensor on air seal chamber, and 26 be control rod guide pipe, 27 It is level sensor under air seal chamber, 28 be the low water level liquid level of swimmer's pool, and 29 be to rise cylinder water outlet absolute altitude, and 30 be Chi Ding Protective cover plate, 31 be fuel handling material machine inside and outside pond, and 32 be full-water level liquid level, and 33 be irradiated fuel store frame.
Embodiment:
Fig. 1 is the swimmer's pool heat supplying nuclear reactor pond inner structure schematic diagram that the present invention designs.As seen from Figure 1, reactor water Pond [1] is made of armored concrete, and inner wall is covered with clad lining, fills with deionized water in pond, and there is a head cover [11] in pond, Chi Ding with Under by ventilating system maintain be slightly below normal pressure.In basin bottom installation reactor core [2], water enters reactor core from bottom, is heated to Afterwards by being flowed out at the top of reactor core, through rising cylinder [19], cooling cylinder [4] and cooling cylinder outlet circulation line [8] stream Discharge bay, enters circulating pump [7] after cooling in heat exchanger [6], is then back to pond.In normal reactor operation, control Rod drive mechanism [13] processed is operated in declared working condition by rope traction control rod [3], control reactor, and circulating pump [7] drives Dynamic circuit flow meets the needs of carrier band reactor capability.
After reactor shutdown, circulating pump can be stopped, water wears partial discharge under the driving of cold and hot water temperature difference Reactor core, return, heat exchanger and circulating pump impeller is crossed to continue to flow, and the residual heating of cooled reactor.Water cools down System cools down heat exchanger [16] and water cooling tower [12] by water, and water temperature is maintained for a long time by the Natural Circulation of water in pipe Degree.
Swimmer's pool heat supplying nuclear reactor cooling water is to be under different temperatures and different pressures to circulate, in normal and abnormal feelings Under condition, all at any time there may be gas, it is necessary to discharge the excessive gas in circulation loop in time.In cooling cylinder [4] and The gas produced in cooling cylinder outlet circulation line [8], can be discharged by inertia water tank [9].But in reactor core [4] and rise In cylinder [19], recirculated water is in heating and pressure reduction, easily produces gas (or steam), air seal chamber of the invention inflation Space [24] is exactly to discharge excessive gas at any time and design.
Fig. 2 is the pool gas annular seal space and control rod guide pipe component structure diagram that the present invention designs.Can by Fig. 2 See, the pipeline that inspection platform in pond [18] is exported to from reactor core [2] is known as rising cylinder [19], has gas on the top for rising cylinder [19] Body annular seal space head cover [17].Air seal chamber head cover [17] is seated in Push-fit to be risen on cylinder [19], and close by gas Chamber connecting tube [5], charge valve [11] and air bleeding valve [10] are sealed, is connected with compressed air system.Control rod is oriented to tube assembly bag Control rod guide pipe [26], control rod guide pipe cross member [22] and control rod guide pipe longitudinal rod [23] are included, they Through air seal chamber head cover [17], and it is tightly connected, these components are linked to be an entirety.
During normal reactor operation, after circulating pump [7] starts, air seal chamber plenum space [24] pressure is less than outside Water pressure, water can be entered by bell and spigot to be risen in cylinder [19].At this moment charge valve [11] is opened, compressed air is close by gas Envelope chamber connecting tube [5] enters air seal chamber plenum space [24].When internal and external pressure balance, liquid level on air seal chamber is formed [21] liquid level [20] and under gas annular seal space, then more gas will be from overflowing on air seal chamber from liquid level [21].At this moment close Charge valve [11] is closed, enters normal operating conditions, the gas sealing structure of gas formation is filled with, makes bell and spigot will not leak. If produce gas in reactor core [2] and rising cylinder [19] in reactor operation, air seal chamber plenum space [24] can be entered, so Unnecessary gas is just overflowed from liquid level [21] on air seal chamber afterwards.Liquid under liquid level [21] and gas annular seal space on air seal chamber Face [20] place, is respectively equipped with air seal chamber level sensor [27], liquid level under level sensor [25] and gas annular seal space Signal is sent when abnormal.If air seal chamber plenum space [24] gas flow is reduced, level sensor [25] on air seal chamber Abnormal signal can be sent with lower level sensor [27], charge valve [11] make-up gas can be opened when needed, be returned to just Normal state.
After circulating pump [7] are closed in reactor shutdown, air seal chamber plenum space [24] interior gas overflowing, gas is close Liquid level [20] can be increased to the level of liquid level [21] on air seal chamber under envelope chamber.Air bleeding valve [10] can be opened when needed, Annular seal space plenum space [24] interior all gas are discharged, are made naturally cold between current formation reactor core and water inside and outside rising cylinder [19] But circulate.
Swimmer's pool loss of-coolant accident (LOCA) is occurring, is causing the water surface to be greatly lowered, or because maintenance is reloaded need of work, is reducing water During water level, then air bleeding valve [10] discharge annular seal space plenum space [24] interior all gas are opened, ensure oneself between reactor core and water Right circulating cooling condition.
Fig. 3 is to remove structure diagram after air seal chamber head cover.During reactor refuling overhauls, control rod guide pipe [26] after the steel wire rope of control rod and top in aggravates rod disengaging, control rod is oriented to tube assembly and air seal chamber head cover [17], and other connected components, hung out as an entirety from rising in cylinder [19].By Fig. 3 see be rise cylinder [19] top structure, water level have been in low water level liquid level [28] place of swimmer's pool, in pond inspection platform [18] it Under, rising cylinder [19] is suitable for reading to be opened wide, and is convenient for reactor fuel handling and overhaul of the equipments.Rise cylinder water outlet absolute altitude [29] to be less than The low water level liquid level [28] of swimmer's pool, makes current inside and outside rising cylinder [19] to be passed to Natural Circulation, residual heat of nuclear core in water, and Water heat is transferred to water cooling tower [12] by the lower device of water cooling heat exchanger [16], and maintenance is reloaded during maintenance Normal pond water temperature.
The water depth of the low water level liquid level [28] of swimmer's pool, meets reactor fuel component after a component height is lifted Shielding requirements, therefore can in pond on inspection platform [18] carry out reactor fuel component handling and ex-situ operations.Weary combustion Material component can be placed on pallet, or is loaded in fuel assembly bracketplant, they are all temporarily placed near core region.
Fig. 4 is a fuel handling embodiment of patent of the present invention.From fig. 4, it can be seen that swimmer's pool process heat reactor is changed in maintenance During material, pond top protective cover plate [30] and pool top cover [14] are had moved on the platform outside pond.The inspection platform in pond [18] after the completion of the operation on, full-water level liquid level [32] is added water to swimmer's pool, will using fuel handling material machine [31] inside and outside pond Irradiated fuel assembly on pallet is lifted near reactor core position together with fuel assembly bracketplant to rising cylinder [19] top, transhipment Irradiated fuel store frame [33] outside to swimmer's pool.These operations are all that certain depth carries out under water, be ensure that to spentnuclear fuel The cooling of component and shielding requirements.After completing fuel assembly transfer operation, recover the position of pool top cover [14], then will control Rod is oriented to tube assembly and original position is gone back in the integral hoisting of air seal chamber head cover [17].Although air seal chamber head cover [17] is located always In water layer depths, but its socket fitting type structure makes lifting work simple and feasible, and can guarantee that the seal request of circulation loop. After control rod guiding tube assembly lower end is docked with reactor core top, the steel wire rope in guide pipe aggravates rod and is connected with control rod [3], so After can enter normal reactor operation state.

Claims (5)

1. a kind of swimmer's pool heat supplying nuclear reactor pond inner structure and fuel handling method, including pond, reactor core, control rod, heat exchange Device and circulating pump, reactor core are placed in basin bottom, and control rod is placed in reactor core, and heat exchanger and circulating pump are placed in outside pond, and heat is handed over The water outlet of parallel operation is connected by circulating pump and water, and water intake end and the reactor core of heat exchanger are connected, it is characterised in that institute Depth of water is 10-60 meters in the pond stated, and pipeline is equipped with air seal chamber in pond, and the air seal chamber can be arranged at any time Go out excessive gas.
2. heat supplying nuclear reactor pond as claimed in claim 1 inner structure and fuel handling method, it is characterised in that pipeline in the pond On air seal chamber further include air seal chamber head cover and lower part socket, two parts are socket fitting type structure.The gas is close Seal chamber socket fitting type structure, can be opened and closed in deep water medium and long distance, and using air seal chamber holding recirculated water and water every From.
3. heat supplying nuclear reactor pond as claimed in claim 1 inner structure, it is characterised in that the air seal in the pond on pipeline Chamber further includes the connecting tube being connected with compressed air system, charge valve and air bleeding valve.
4. heat supplying nuclear reactor pond as claimed in claim 1 inner structure, it is characterised in that the air seal in the pond on pipeline Chamber further includes the upper and lower level sensor of air seal chamber.
5. heat supplying nuclear reactor pond as claimed in claim 2 inner structure and fuel handling method, it is characterised in that irradiated fuel assembly The air seal chamber head cover of unlatching is may pass through, is transported to outside pond, keeps irradiated fuel assembly that there is underwater transport and water shielding Condition.
CN201711060383.1A 2017-10-31 2017-10-31 Swimmer's pool heat supplying nuclear reactor pond inner structure and fuel handling method Pending CN107910079A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109378089A (en) * 2018-11-12 2019-02-22 中国原子能科学研究院 A kind of in-pile component for swimming pool formula low temperature heating reactor power expansion
CN110428914A (en) * 2019-07-05 2019-11-08 中国核电工程有限公司 A kind of Spent Fuel Pool system with air natural-circulation capacity
WO2021248387A1 (en) * 2020-06-10 2021-12-16 中广核研究院有限公司 Refueling transfer device, and refueling method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85100044A (en) * 1985-04-01 1985-09-10 清华大学 Deepwater swimming-pool type reactor for supplying heat
CN1061105A (en) * 1990-10-25 1992-05-13 清华大学 Forced circulation and separately placed type deep water pond nuclear heat supply reactor
CN1337719A (en) * 2001-09-21 2002-02-27 田嘉夫 Heat supplying nuclear reactor with forced-circulation cooling deep water including natural circulation
CN1514445A (en) * 2002-12-27 2004-07-21 中国核动力研究设计院 Low temperature heat supply reactor having high safety
CN101441902A (en) * 2008-11-18 2009-05-27 肖宏才 Inherent safety pool case combination low-temperature stack nuclear heating station apparatus and operational procedure thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85100044A (en) * 1985-04-01 1985-09-10 清华大学 Deepwater swimming-pool type reactor for supplying heat
CN1061105A (en) * 1990-10-25 1992-05-13 清华大学 Forced circulation and separately placed type deep water pond nuclear heat supply reactor
CN1337719A (en) * 2001-09-21 2002-02-27 田嘉夫 Heat supplying nuclear reactor with forced-circulation cooling deep water including natural circulation
CN1514445A (en) * 2002-12-27 2004-07-21 中国核动力研究设计院 Low temperature heat supply reactor having high safety
CN101441902A (en) * 2008-11-18 2009-05-27 肖宏才 Inherent safety pool case combination low-temperature stack nuclear heating station apparatus and operational procedure thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109378089A (en) * 2018-11-12 2019-02-22 中国原子能科学研究院 A kind of in-pile component for swimming pool formula low temperature heating reactor power expansion
CN110428914A (en) * 2019-07-05 2019-11-08 中国核电工程有限公司 A kind of Spent Fuel Pool system with air natural-circulation capacity
CN110428914B (en) * 2019-07-05 2023-01-17 中国核电工程有限公司 Spent fuel pool system with air natural circulation capability
WO2021248387A1 (en) * 2020-06-10 2021-12-16 中广核研究院有限公司 Refueling transfer device, and refueling method

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