CN110111912A - Spontaneous evaporation metal MHD integral reactor - Google Patents
Spontaneous evaporation metal MHD integral reactor Download PDFInfo
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- CN110111912A CN110111912A CN201910514402.6A CN201910514402A CN110111912A CN 110111912 A CN110111912 A CN 110111912A CN 201910514402 A CN201910514402 A CN 201910514402A CN 110111912 A CN110111912 A CN 110111912A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C1/00—Reactor types
- G21C1/32—Integral reactors, i.e. reactors wherein parts functionally associated with the reactor but not essential to the reaction, e.g. heat exchangers, are disposed inside the enclosure with the core
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- 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
-
- 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
- G21C15/28—Selection of specific coolants ; Additions to the reactor coolants, e.g. against moderator corrosion
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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
Abstract
The invention discloses a kind of spontaneous evaporation metal MHD integral reactors, it include reactor pressure vessel, in-pile component, reactor core, inner magnet, starting motor and turbine in reactor, wherein, reactor pressure vessel by subcylindrical cylinder and lid is located at lid at the top of cylinder, the bottom (head) that is supported on cylinder body bottom forms.Out-of-pile includes outer magnet, rotary drum control rod, heat-pipe radiator, shielding construction.The present invention is suitable for fast reactor, applies also for other persistence heat sources such as isotope heat source；Meanwhile reactor structure size and output power adjustable extent are larger.
Description
Technical field
The invention belongs to space Small Size Nuclear Power Plant technical fields, in particular to a kind of to have full ambient engine automatic cycle energy
The all-in-one micro reactor of the spontaneous evaporation metal MHD of power.
Background technique
Realize that the clean energy resource of extensive stable electric generation, nuclear energy are to alleviate lance between environment and energy demand as most probable
One of important channel of shield.The applicable key of core is its safety, with the development of nuclear power technology, the third generation, forth generation
Nuclear power system generally has the non-passive safeties characteristic such as total power or Partial Power Natural Circulation, passive residual heat removal.
Meanwhile with the expansion of mankind's space exploration range, the extension of time is explored, can last for several years and not depend on the sun
Light provides the important need that the other electric energy supply of hundred multikilowatts becomes space exploration.And China's isotope generator material storage amount compared with
Few, space based reactor more becomes the main selection of the moon, Mars base and remote exploration of solar system device energy supply.
The type of cooling of space based reactor mainly includes liquid metal cooling, gas cooling, liquid metal heat pipe etc., wherein
Though liquid metals heat pipe security performance with higher but current technology is still immature；Liquid metal cooling, gas cooling mode
Though similar with ground nuclear power system, current nuclear power system coolant Natural Circulation all relies on gravity and density difference of coolant,
Space environment can not ensure natural-circulation capacity, therefore pump or fan can only be used to drive cooling working medium, and there are pump or fan mistakes
Effect cooling capacity loses the risk for causing reactor core to melt.
The energy conversion regime of space based reactor mainly includes thermocouple and thermion, Stirling cycle, enclosed Bretton
Circulation etc., wherein thermocouple conversion is at present using most conversion regimes.But thermocouple switching device Radiation hardness is poor,
And energy conversion efficiency is lower --- to reach higher transfer efficiency must have high hot-side temperature, therefore American-European at present
And China is also in the research for carrying forward vigorously the energy conversion regime such as Stirling cycle, Closed Brayton Power Cycle；The latter has very high
Energy conversion efficiency compare thermocouple, the equipment quality of unit conversion power is larger, mechanical but as energy conversion unit
Structure is more complex, and moving component is more, especially Closed Brayton Power Cycle.
The present invention solves the problems, such as that nuclear reactor coolant Natural Circulation must rely on gravity, realizes agravic effect
The cooling non-passive safety of lower reactor core；It is inclined to solve space based reactor tyre heat engine power converting system quality simultaneously
Greatly, the problem of complicated in mechanical structure and fragility, realizes a kind of highly integrated integrated reacting pile structure.
Summary of the invention
The object of the present invention is to provide a kind of one of spontaneous evaporation metal MHD with full ambient engine automatic cycle ability
Change micro reactor, the liquid metal type of cooling realizes the automatic cycle ability under steric requirements, while using more simplified, collection
At energy converting structure realize higher transfer efficiency under lower hot-side temperature.
Present invention employs the following technical solutions:
Spontaneous evaporation metal MHD integral reactor, structure are as follows: including reactor pressure vessel, heap in reactor
Inner member, reactor core, center magnet, inner magnet, starting engine and turbine；Out-of-pile includes positioned at corresponding with inner magnet
Outer magnet, rotary drum control rod, heat-pipe radiator and the shielding construction of position；Wherein, reactor pressure vessel is by subcylindrical
The bottom (head) composition that cylinder and lid are located at lid at the top of cylinder, are supported on cylinder body bottom is equipped in the cylinder of pressure vessel
Pressure vessel space is divided into inside and outside two regions by in-pile component shroud；The top of in-pile component shroud is provided with center magnet
And inner magnet, coolant flow passages are formed between center magnet and inner magnet, in-pile component shroud middle and lower part is equipped with reactor core, and reactor core is
The cylindrical reactor core arranged by the fuel element of elongated cylindrical, or it is provided with the cylindrical heap of elongated cylindrical coolant flow passages
Core is fixed on in-pile component shroud middle and lower part by fuel element carrier, is set as nozzle form at the top of core coolant flow road；
Turbine, the impeller below wheel axis connection reactor core of the turbine by passing through reactor core are equipped with above nozzle；In reactor core outside pressure vessel
The rotary drum control rod of several annular arrays is arranged in active region height, and rotary drum is cylinder, main structure and circumferential side outer layer
Structure is neutron reflection material, and other side layer structure is neutron absorber material, adjusts control rod pair reactor core by rotary drum
The absorption of neutron is to adjust the reactivity of reactor core；Rotary drum lower rotating shaft is inserted into bottom shielding construction, and top connects rotating electric machine；
Rotating electric machine is inserted into rotary drum cylinder.
Reactor cyclic process is as follows: cold for the metal MHD of reactor core between in-pile component shroud and pressure container cylinder
But the region that agent flows downward, metal MHD coolant partial gasification when by reactor core, is sprayed upwards by nozzle, is driven
Metal MHD biphase gas and liquid flow moves upwards, and converts heat energy into mechanical energy；Metal MHD passes through during moving upwards
Runner between center magnet and inner magnet, cutting magnetic induction line power generation, converts mechanical energy into electric energy；Metal MHD is transported upwards
Moved downward after moving to pressure vessels top cover from the region between in-pile component shroud and pressure container cylinder, pass through inner magnet and
Runner between outer magnet, cutting magnetic induction line generates electricity again, converts mechanical energy into electric energy；It was moved downward in metal MHD
Cheng Zhong, by pressure container cylinder outside heat-pipe radiator waste heat is exported to heat sink, liquid metal magnetohydrodynamic stream after cooling
Go back to reactor core lower part；Metal MHD drives turbine from the upward course of injection of reactor core nozzle, and turbine connects the impeller of reactor core lower part
The liquid metal magnetohydrodynamic cooled down is pumped into reactor core by rotation, and partial gasification forms complete coolant circulation；The structure in heap
Setting starting engine in part bottom utilizes structure in Core cooling agent and heap before reactor start-up, coolant circulation are not set up
The starting engine of part bottom (is free piston stirling engine in case, the temperature difference drives free piston stirling engine
Movement drives plunger pump that coolant is pumped into reactor core, other engines also can be selected by power piston) form circulation.
Wherein, in-pile component bottom is provided with starting engine.
Wherein, the engine is Stirling engine.
Wherein, reactor core periphery is equipped with molybdenum-rhenium alloy thin layer.
Wherein, the reactor core active region altitude range on the outside of pressure vessel lower cylinder is equipped with the reflecting layer with drum structure；
Rotary drum side is equipped with boron carbide absorber, is rotated by motor control rotary drum to adjust the neutron-absorbing in reflecting layer, and then control
Reactor core reactivity.
Wherein, when motor power loss, boron carbide absorber is by auto-steering reactor core side, to realize shutdown；
Rotary drum simultaneously can partial slip go out reactor core active section, when reactor overtemperature, the gas chamber decompression that rotary drum will be made fixed, rotary drum exists
Reactor core active section is partially slid out under spring-force driven dual, to realize shutdown.
Wherein, a circle heat pipe is equipped with outside pressure container cylinder；The heat pipe seat being close to pressure vessel is inserted into heat pipe lower part,
The hot pipe section contacted in heat pipe seat with pressure vessel becomes heat pipe hot end, and heat pipe cold end connects radiator and realized by heat radiation
Waste heat discharge.
Wherein, the bottom and side of pressure container cylinder are respectively arranged with bottom shielding and side shield for reducing out-of-pile
Dose of radiation.
Wherein, pressure container cylinder and bottom (head) are welded to connect, and the flange of pressure vessels top cover and cylinder passes through kingbolt
Connection, sealing surface set two seals ring.
Wherein, using low-boiling liquid metal coolant, core temperature is above the boiling point, coolant portion when passing through reactor core
Divide gasification.
Wherein, turbine is set above reactor core, drives turbine to rotate using the mechanical energy of two phase flow coolant metal injection,
And then coolant is pumped into reactor core in reactor core lower part and maintains coolant circulation.
Further, coolant is low-boiling liquid metal magnetohydrodynamic, liquid metal magnetohydrodynamic Na or NaK alloy.
The invention has the benefit that
(1) the total power automatic circulating system of gravity is not depended on, it can be in the various environment such as space, lunar surface, Mars, underwater
Under, and tilt, wave etc. and all having non-passive safety performance under various postures；
(2) automatic cycle power does not come from density difference of coolant, can be in higher power density and lower coolant
Under runner height, total power automatic cycle is realized；
(3) highly integrated modular organization is used, reactor core, energy converting structure, generator, circulatory mediator is complete
Portion is arranged in a pressure vessel, security performance with higher；
(4) full out-pile power control, improves pressure boundary safety；
(5) using dual non-passive safety design power control system, two sets of reactor shut-off systems are mutually indepedent, power loss,
Passive shutdown, non-passive safety performance with higher are able to achieve under the states such as overtemperature；
(6) passive residual heat removal function, any extraneous intervention is not required to after shutdown can be completely exhausted out waste heat；
(7) magnetohydrodynamic generator is used, higher conversion efficiency of thermoelectric and higher power density may be implemented；
(8) conversion process of energy can follow core power to change automatically, realize the automatic adjustment of output power；
(9) reactor structure is simple, and the components such as control rod driving of complicated in mechanical structure, are not returned without multiple coolant
Road has higher conversion efficiency and reliability；
(10) gas magnetic fluid is compared, liquid metal magnetohydrodynamic can work at relatively low temperature, reduce to anti-
Answer the requirement of heap material；
(11) modular organization for directly exporting electric energy is suitble to produce in enormous quantities, assemble, can be suitable by changing module number
Answer the needs of different capacity；
(12) reactor basic structure is applied widely, is not only suitable for fast reactor, applies also for that isotope heat source etc. is other to be held
Long property heat source；Meanwhile reactor structure size and output power adjustable extent are larger.
Detailed description of the invention
Fig. 1 is the overall structure diagram of spontaneous evaporation metal MHD integral reactor of the invention；
Fig. 2 is the structural schematic diagram of pressure vessel in spontaneous evaporation metal MHD integrated reacting pile structure of the invention；
Fig. 3 is the structural representation in spontaneous evaporation metal MHD integrated reacting pile structure of the invention inside pressure vessel
Figure；
Fig. 4 is the structural representation in spontaneous evaporation metal MHD integrated reacting pile structure of the invention outside pressure vessel
Figure；
Wherein, 1 is pressure vessel；2 be in-pile component；3 be reactor core；4 be inner magnet；5 be outer magnet；6 be center magnet；
7 be starting engine；8 be turbine；9 be rotary drum reflecting layer；10 be heat pipe；11 be side shield；12 shield the bottom of for.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments, but it should be recognized that these have
Body embodiment is only exemplary, it is no intended to be limited the scope of the invention.
The overall structure signal of spontaneous evaporation metal MHD integral reactor of the invention is shown referring to Fig. 1, Fig. 1
Figure；Wherein, the specific structure of reactor of the invention includes: pressure vessel 1, in-pile component 2, reactor core 3, inner magnet 4, outer magnet
5, center magnet 6, starting engine 7, turbine 8, rotary drum reflecting layer 9, heat pipe and heat pipe seat 10, side shield 11, bottom shielding 12 etc..
Wherein, the in-pile component 2 for fission heat to be switched to electric energy, coolant flow passages is organized and forms automatic cycle ability, reactor core 3,
Inner magnet 4, center magnet 6, starting engine 7, turbine 8 are arranged in pressure vessel；Outer magnet 5 and for waste heat discharge,
Rotary drum reflecting layer 9, heat pipe and the heat pipe seat 10 of reactivity control and function of shielding, bottom shielding construction 12 etc. are arranged in pressure appearance
Outside device.
Specifically, referring to fig. 2, Fig. 2 is shown in spontaneous evaporation metal MHD integrated reacting pile structure of the invention
The structural schematic diagram of pressure vessel, reactor pressure vessel 1 therein are located at the top of cylinder by subcylindrical cylinder and lid
Lid, be supported on cylinder body bottom bottom (head) composition；Wherein shroud and bottom (head) are welded to connect, pressure vessels top cover and shroud
Upper flange is connected by kingbolt, and sealing surface sets 2 sealing rings.
It is equipped with in-pile component shroud 2 in pressure container cylinder, 1 lower section space of pressure vessel is divided into inside and outside two regions；
The inside of in-pile component shroud 2 is equipped with reactor core 3, while the region flowed up in shroud for coolant；In-pile component shroud with
It is the region of refrigerant downstream between pressure vessel lower cylinder；Diameter of the shroud lower end by pressure vessel shroud bottom boss
To limit.
It is shown referring to Fig. 3, Fig. 3 in spontaneous evaporation metal MHD integrated reacting pile structure of the invention in pressure vessel
The structural schematic diagram in portion is additionally provided with reactor core 3, inner magnet 4, center magnetic inside pressure vessel 1 other than in-pile component shroud 2
Body 6 starts engine 7, turbine 8, and core structure can arrange for elongate cylindrical shape fuel element, this designs lower core structure
Outside is the reactor core cylinder of thin-walled, and cylinder connects several layers fuel element panel (being three layers in figure)；Panel is removed to fuel element
Radial limit is outer, and also there are coolant channels；It is logical that core structure can also open elongate cylindrical shape coolant for cylindrical type fuel reactor core
Road.Core structure is mounted on the lower part in in-pile component shroud；Top in in-pile component shroud, core structure top are disposed with
Center magnet；Inner magnet is disposed with around center magnet, the annular space between center magnet and inner magnet is coolant rising
Runner；The upper up-flow that several nozzle arrangements import coolant between center magnet and inner magnet is disposed with above core structure
Road；Several small sized turbines are arranged in the coolant flow passages above nozzle, and each turbine passes through the wheel shaft and reactor core across reactor core
The impeller of lower section is connected, and impeller rotates together with turbine；In-pile component bottom setting starting engine.
In a specific embodiment, the liquid metal magnetohydrodynamic coolant partial gasification being heated in reactor core 3, volume are acute
Strong expansion, two phase flow metal MHD convert heat energy into mechanical energy from reactor core top ozzle high speed ejection；The magnetic fluid of ejection
On the one hand turbine rotation is driven, the power generation of one side cutting magnetic induction line converts mechanical energy into electric energy；Two phase flow magnetic fluid reaches pressure
The space prolonged between in-pile component shroud and pressure container cylinder after force container top cover moves downward, again cutting magnetic induction line, together
When pressure vessel outside heat-pipe radiator take away waste heat；Liquid metal magnetohydrodynamic after cooling is flow to below reactor core, by turbine band
Dynamic impeller is pumped into reactor core, realizes magnetic fluid coolant automatic cycle.
Further, it is disposed with rotary drum reflecting layer, heat pipe, side shield and bottom shielding construction outside pressure vessel, sees 4 institute of attached drawing
Show.
Rotary drum reflecting layer is formed a circle by several rotary drums to be arranged in outside the shroud of pressure vessel lower part；Its main structure and
Circumferential side layer structure is neutron reflection material, and other side layer structure is neutron absorber material, is adjusted by rotary drum
The reactivity of reactor core；Rotary drum lower rotating shaft is inserted into bottom shielding construction, and top connects rotating electric machine；Rotating electric machine is inserted into rotary drum gas
In cylinder.
Heat pipe lower part is injected in heat pipe seat near reactor to improve heat exchange efficiency；Heat pipe seat is close to pressure container cylinder
To improve the heat exchange efficiency in heat pipe and pressure vessel between coolant；Heat pipe top is stretched out from pressure vessel upper space, even
It is connected to radiator structure；Largely (being 12 in figure) heat pipe is arranged in around pressure vessel shroud.
Part other than above structure is side shield structure and bottom shielding construction.
Specific embodiment 1 is given below, more fully hereinafter to illustrate structure of the invention.
Embodiment 1
(1) reactor main body is subcylindrical pressure vessel, pressure vessel shroud outer diameter 280mm, height 660mm, pressure
Force container cylinder wall thickness 20mm, kingbolt nominal diameter 10mm, quantity 24；Reactor core, energy converting structure, magnetohydrodynamic generator
Machine, circulatory mediator are all arranged in pressure vessel；For controlling the reactive reflection layer structure with rotary drum of reactor core with heat
Mechanics working medium tube is arranged in other than pressure vessel.
(2) it is equipped with in-pile component shroud in pressure container cylinder lower section, pressure vessel lower section space is divided into two inside and outside
Region；In-pile component shroud outer diameter 220mm, height 480mm, wall thickness 10mm.
(3) by diameter 14mm, the uranium nitride fuel element arrangement of length 200mm is diameter 200mm, the circle of height 200mm
Cylindricality reactor core is fixed on in-pile component shroud middle and lower part, fuel enrichment 98% by fuel element carrier；Reactor core periphery is equipped with
The molybdenum-rhenium alloy thin layer of one layer of 2mm thickness.
(4) inside in-pile component shroud, inner magnet, inner magnet height 250mm, thickness 35mm are equipped with above core structure；
Center magnet diameter 50mm, height 250mm；The coolant flow passages width 35mm passed through between inner magnet and center magnet；Pressure
External container is same as inner magnet to be highly equipped with outer magnet, thickness 30mm；Between in-pile component cylinder and pressure container cylinder
Coolant flow passages width 25mm, passes through between inner magnet.
(5) on the outside of pressure vessel lower section, reactor core active region altitude range is equipped with the oxidation beryllium reflector with drum structure, instead
Penetrate thickness degree 100mm, height 200mm；Roller diameter 80mm, circumference side are equipped with 20mm thickness boron carbide absorber, pass through electricity
Machine control rotary drum rotates to adjust the neutron-absorbing in reflecting layer, and then controls reactor core reactivity, and when motor power loss, absorber will
Auto-steering reactor core side, to realize shutdown；Rotary drum can slide out reactor core active section 200mm simultaneously, work as reaction
When heap overtemperature causes heat pipe hot-side temperature to be more than 200 DEG C, the gas chamber decompression that rotary drum will be made fixed, rotary drum portion under spring force
Divide and slide out reactor core active section, to realize shutdown.
(6) 12 heat pipes are equipped with outside pressure container cylinder, heat pipe passes through aluminum alloy heat tube socket and pressure container cylinder
Heat exchange, heat pipe diameter 20mm, total quantity 24；Every and pressure vessel sidewall contact length 300mm；Heat pipe cold end is using radiation
Device realizes waste heat discharge, radiator surface product 200m2。
(9) metal MHD is Na (in other embodiments can also be NaK alloy etc.).
(10) magnet system is provided by the helmholtz coil of ceramic insulation involucrum.
The operating parameter of the embodiment is as follows:
(1) electric rating 200kw；
(2) 900 DEG C of core temperature；
(3) design pressure 10MPa；
(4) 150 DEG C of heat pipe temperature end temperature, 120 DEG C of low-temperature end temperature.
Although giving detailed description and explanation to the specific embodiment of the invention patent above, it should be noted that
Be, we can the conception of patent according to the present invention various equivalent changes and modification are carried out to above embodiment, produced by
Function still covered without departing from specification and attached drawing spirit when, should all be within the scope of protection of the patent of the invention.
Claims (12)
1. spontaneous evaporation metal MHD integral reactor, interior reactor includes reactor pressure vessel, in-pile component, reactor
Core, inner magnet, starting motor and turbine, wherein reactor pressure vessel is located at cylinder top by subcylindrical cylinder and lid
The lid in portion, the bottom (head) composition for being supported on cylinder body bottom；Out-of-pile includes outer magnet, rotary drum control rod, heat-pipe radiator
And shielding construction；
It is equipped with in-pile component shroud in pressure container cylinder, pressure vessel space is divided into inside and outside two regions；In-pile component encloses
The middle and lower part of cylinder is equipped with reactor core, is the region of refrigerant downstream between in-pile component shroud and pressure container cylinder；Reactor core
Coolant be low-boiling liquid metal magnetohydrodynamic Na or NaK alloy, core temperature be higher than coolant boiling point, liquid metal magnetic
Fluid partial gasification when by reactor core, is sprayed upwards by nozzle, metal MHD biphase gas and liquid flow is driven to move upwards, will
Thermal energy is converted to mechanical energy；Metal MHD moves upwards the runner across center magnet and inner magnet in the process, cutting
Magnetic induction line power generation, converts mechanical energy into electric energy；Metal MHD encloses after moving up to pressure vessels top cover from in-pile component
Region between cylinder and pressure container cylinder moves downward, the runner across inner magnet and outer magnet, again cutting magnetic induction
Line power generation, converts mechanical energy into electric energy；During metal MHD moves downward, by pressure container cylinder outside heat pipe dissipate
Hot device exports waste heat to heat sink, and liquid metal magnetohydrodynamic after cooling flows back to reactor core lower part；
Metal MHD drives turbine from the upward course of injection of reactor core nozzle, and turbine connects the wheel rotation of reactor core lower part, will
The liquid metal magnetohydrodynamic cooled down is pumped into reactor core, and partial gasification forms complete coolant circulation；It is set in in-pile component bottom
Starting Stirling engine utilizes Core cooling agent and pressure vessel before reactor start-up and coolant circulation are not set up
The temperature difference of bottom drives free piston stirling engine movement, drives plunger pump that coolant is taken out such as reactor core shape by power piston
At circulation.
2. reactor as described in claim 1, wherein the pressure vessel top inside and outside portion of cylinder is provided with magnet；Magnet setting
In the inside and outside two sides for the coolant flow passages that in-pile component cylinder and pressure container cylinder surround.
3. reactor as described in claim 1, wherein pressure vessel bottom is provided with starting engine.
4. reactor as described in claim 1, wherein reactor core is the cylindrical heap arranged by the fuel element of elongated cylindrical
Core, or it is provided with the cylindrical reactor core of elongated cylindrical coolant flow passages, in-pile component shroud is fixed on by fuel element carrier
Middle and lower part, core coolant flow road top are set as nozzle form.
5. reactor as described in claim 1, wherein reactor core periphery is equipped with molybdenum-rhenium alloy thin layer.
6. reactor as described in any one in claim 1-5, wherein the reactor core active region on the outside of pressure vessel lower cylinder is high
It spends range and is equipped with the reflecting layer with drum structure；Rotary drum side be equipped with boron carbide absorber, by motor control rotary drum rotate come
The neutron-absorbing in reflecting layer is adjusted, and then controls reactor core reactivity.
7. reactor as claimed in claim 6, wherein when motor power loss, boron carbide absorber is by auto-steering reactor
Core side, to realize shutdown；Rotary drum simultaneously can partial slip go out reactor core active section, when reactor overtemperature, rotary drum will be made
Fixed gas chamber decompression, partial slip goes out reactor core active section to rotary drum under spring force, to realize shutdown.
8. reactor as described in any one in claim 1-5, wherein be equipped with a circle heat pipe outside pressure container cylinder；With pressure
The hot pipe section of force container contact becomes heat pipe hot end, and heat pipe cold end realizes waste heat discharge using radiator.
9. reactor as described in any one in claim 1-5, wherein the bottom and side of pressure container cylinder are respectively arranged with
Bottom shielding and side shield.
10. reactor as described in claim 1, wherein pressure container cylinder and bottom (head) are welded to connect, pressure vessels top cover
It is connect with the flange of cylinder by kingbolt, sealing surface sets two seals ring.
11. reactor as described in claim 1, wherein use low-boiling liquid metal coolant, core temperature is higher than boiling
Point, coolant partial gasification when passing through reactor core.
12. reactor as described in claim 1, wherein turbine is arranged above reactor core, is sprayed using two phase flow coolant metal
The mechanical energy penetrated drives turbine rotation, and then coolant is pumped into reactor core in reactor core lower part and maintains coolant circulation.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110491533A (en) * | 2019-08-22 | 2019-11-22 | 哈尔滨工程大学 | A kind of double-deck cooling reactor core electricity generation system |
| CN113744901A (en) * | 2021-08-09 | 2021-12-03 | 中国原子能科学研究院 | Hot plate reactor core heat exchanger, nuclear reactor equipment and manufacturing method |
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