CN106448753A - Method for solving water boiler solution nuclear reactor power fluctuation under high power - Google Patents
Method for solving water boiler solution nuclear reactor power fluctuation under high power Download PDFInfo
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- CN106448753A CN106448753A CN201610905807.9A CN201610905807A CN106448753A CN 106448753 A CN106448753 A CN 106448753A CN 201610905807 A CN201610905807 A CN 201610905807A CN 106448753 A CN106448753 A CN 106448753A
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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
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
- G21C15/14—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from headers; from joints in ducts
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
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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
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
- G21C15/04—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from fissile or breeder material
- G21C15/06—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from fissile or breeder material in fuel elements
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/004—Pressure suppression
- G21C9/008—Pressure suppression by rupture-discs or -diaphragms
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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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Abstract
The invention discloses a method for solving 'water boiler' solution nuclear reactor power fluctuation under high power and relates to a 'water boiler' solution reactor of which the reactor power is greater than 100kW and the reactor power density is 2.0-2.5kW/L. The 'water boiler' solution reactor comprises a reactor core container with a high-concentration uranium UO2(NO3)2 solution, wherein the air cavity of the container is communicated with a reactor core air circuit; a control rod and a cooling pipe are arranged in the solution; neutron reflectors are distributed around the reactor core container; the reactor core container and the neutron reflectors are immersed in a reactor pool; and the reactor pool and a reactor chamber with the reactor core air circuit are isolated from a reactor hall by a second sealing barrier. For the solution reactor, the power fluctuation during high-power operation is overcome by the following measures: increasing the cooling area of the cooling pipe; arranging the cooling pipe in a solution low-power density area; and setting the air cavity of the reactor core container and the reactor core air circuit under a positive pressure, so that the volume of the bubbles generated by the reactor core container can be reduced, the influence of the solution bubble escape on reactivity is effectively controlled, and stable operation of the reactor under high power is guaranteed.
Description
Technical field
The present invention relates to " homogeneous solution-type reactor " solution nuclear reactor technology, is specifically related to a kind of solution under high power
The technical method of " homogeneous solution-type reactor " solution nuclear reactor power swing.
Background technology
Using uniform uranium salt aqueous solution as the nuclear reactor of nuclear fuel, also known as " homogeneous solution-type reactor " solution nuclear reactor, its feature
Be fuel solution under nuclear reaction operating mode, fission heat is passed to by cooling by free convection mode (also include air-flow rise disturbance)
Pipe and cooling wall.
Nineteen forty-three proposes the concept of " homogeneous solution-type reactor " nuclear reactor in the world earliest.December nineteen forty-four has built up band power fortune
The Hypo heap of row, it is water-soluble for uranyl nitrtate using changing as the uranium sulfate aqueous solution of fuel on the basis of Lopo heap
Liquid, power is brought up to 1.0～5.5kW.Heap is returned for solve the problems, such as nitrogen discharge and hydrogen oxygen recombination water, in nineteen fifty by Hypo heap
Supo heap is reconstructed into, makes heap power that 45kW has been up to, fuel solution is still uranyl nitrtate aqueous solution.Establish on the heap
Hydrogen and oxygen are combined into water by catalytic bed by closed air circuit, return heap, radgass, nitrogen, nitrogen oxide all after condensation
It is sealed in air circuit, U-235 enrichment is made into 88.7% by 14.5%, greatly reduces and decomposed the gas for producing by nitric acid
Body.
Thereafter, North American Aviation Incorporation has built two 50kW solution reactors in the U.S., and provides Model L- to states such as Japan
The 50kW solution reactor of 54 types sizing.
Up to the present, most solution reactors all stopped operation or retired.Reason is that these heaps are mainly used in neutron
Activation analyses, neutron photography and various research work.More important reason is succeeding in developing due to solid fuel research reactor,
Higher power level and neutron fluence rate level can be provided, make solid fuel research reactor gradually instead of solution reactor.
Last century the nineties, as countries in the world overwhelming majority research reactor is all aging, in particular for medical same position
Element production two research reactors of Canada aging, directly influence rely on Canada supply medical-isotope the U.S..Face
From now on medical-isotope carry out source problem, the U.S. first proposed the conceptual design of Medical isotope production reactor (MIPR), be molten
Again the exploitation of liquid heap create the opportune time.
According to demand in the world to medical-isotope, 50kW solution reactor be it is difficult to meet medical-isotope demand,
And multiple heaps are built while operation both uneconomical (building and running cost) also is difficult to management.The bohr in the U.S. proposes 200kW doctor
Conceptual design with isotope production reactor (MIPR).This design is that heap container is placed in heap pond (i.e. water is reflecting layer),
Isotope extraction element is also placed in pond, and this requires that reactor is necessarily run at high power.
100kW " homogeneous solution-type reactor " solution reaction heap (WBR) has been built up in China Taiwan in nineteen eighty-two, due to run duration, occurs
Heap power oscillation and cause the heap to be unable to stable operation, retired in 1991.
In the world in addition to Taiwan retired 100kW " homogeneous solution-type reactor " solution reaction heap (WBR), just it is more than without heap power
50kW building, " homogeneous solution-type reactor " solution reaction heap of built and operation.Have " homogeneous solution-type reactor " solution reactor (WBR) in Taiwan only, for building
Make " homogeneous solution-type reactor " solution reactor of the production medical-isotope of 100,000 watts of levels, there is provided uniquely valuable design, construction and operation
Experience and lessons.
We prepare to build 200kW high-enriched uranium homogeneous solution-type reactor solution reactor, production molybdenum -99, iodine -131 and strontium -89 etc. medical with
Position element.The WBR heap in Taiwan is warning taken from the overturned card ahead, it is necessary to understands the reason for causing WBR heap oscillation of power, finds out solution,
Can be successfully to build 200kW high-enriched uranium " homogeneous solution-type reactor " solution reactor to pave the way.
Document 1 " water boiler retired " (The decommissioning of the water boiler
reactor——Atomic Energy Council,Taiwan,China；Shin Chang, Shen-Yu Lai), there is provided
A diameter of 0.95cm of WBR heap water composite cooling pipe, the diameter of the deep bid water cooling tube for being formed by the pipe is about 30cm, and deep bid water cooling tube is altogether
There are 10 circles, the upper zone of neutron flux is arranged in, its reactor core solution temperature is close to water saturation temperature.
And " Argus " solution stack of Russia 20kW, a diameter of 1.0cm of its water composite cooling pipe, the deep bid water-cooled of formation
A diameter of 27cm～28cm of pipe, deep bid water cooling tube has 10 circles, be disposed adjacent to core vessel wall neutron flux minimum
At region.
Compare the two heaps, the heat transfer area of the water composite cooling pipe in core vessel is suitable, and heap power difference is very big, it is clear that
Its cooling capacity of WBR heap of 100kW is too weak, as a result necessarily causes reactor core solution temperature to be close to water saturation temperature, in this work
The reactor core aqueous solution fuel of condition operation, can form the fluctuation of substantial amounts of (gas+vapour) bubble effusion disturbance liquid level.
Compare " Argus " heap and WBR heap, the former heap cooling tube is arranged in neutron flux lowest point, the latter's heap cooling tube cloth
Put at the high flux of neutron, be that neutron leads to according to of the impact of (heap core absorbent body) to nuclear reactivity identical (gas+vapour) bubble amount
The quadratic relationship of amount, for " Argus " heap for escaping with identical (gas+vapour) bubble amount, its (gas+vapour) bubble is concentrated mainly on neutron
Flux lowest point, affects on nuclear reactivity less；And for the WBR heap for having identical (gas+vapour) bubble amount to escape, its (gas+vapour) steeps
It is concentrated mainly at the high flux of neutron, larger on nuclear reactivity impact, cause power swing very big, becoming solution reactor can not be steady
The major reason of fixed operation.Therefore, " Argus " heap is compared, and the cooling tube heat transfer area of WBR heap is too little, it is difficult to take 100kW's out of
Heat.The cooling tube of WBR heap is arranged in the high flux area of neutron again, and (gas+vapour) bubble generation effusion rate of solution is very high, tempestuously
Disturbance liquid level, causes heap power swing uncontrollable.
Document 2 " change in volume appraising model caused by radiolysis bubble and thermal expansion in solution reactor " (external nuclear power, 2011
The 1st phase of year, author：F.J.SOUTO, A.S.HEGER) think：" solution reactor can produce radiolysis gas molecule in fission process, main
If hydrogen molecule.The oxygen of respective amount, and hydrogen peroxide or oxygen are produced with hydrogen.Amounts of hydrogen in solution reactor is depended on
Uranium concentration in Nuclear Fission Rate and fuel solution.Isotope is produced with homogeneous aqueous solution's reactor, due to radiolysis bubble in solution
Formation and thermal expansion caused by fuel solution change in volume to reactivity impact, it is necessary to alleviated, to allow solution reactor
Stable operation ".
Document 3 " producing the Cavitation effect analysis of radiolysis gas in Medical isotope production reactor operation " (NUCLEAR
SCIENCE AND ENGINEERING, 2005,150,322-335) think：" migration of radiolysis gas bubble is with final from fuel
The fluctuation that may cause heap power is escaped in solution ".
Impact of the radiolysis bubble that document 2 and document 3 are proposed to heap power swing, refers to the air bladder accumulated amount pair that radiolysis goes out
The impact of heap power swing.
Therefore, reactant aqueous solution heap production medical-isotope is built, and the bubble effect of radiolysis gas generation is solved to heap work(
The impact of rate fluctuation is crucial, particularly to the production medical-isotope of 100,000 watts of levels of construction " homogeneous solution-type reactor " solution reactor, particularly
Important.
Content of the invention
It is an object of the invention to：The method for solving " homogeneous solution-type reactor " solution nuclear reactor power swing under high power is provided.
The inventive method is applied on following " homogeneous solution-type reactor " solution nuclear reactors really, the heap power that it has>100kW, heap
Power density is 2.0～2.5kW/L, includes following basic structures：Using flat or dish bottom column type close perpendicular fill stainless
Steel core vessel, has high-enriched uranium UO of the volume for 50L～100L in container content2(NO3)2Solution is used as nuclear fuel, fuel solution
Container cavity part above is air cavity；Reactor core solution divides inside and outside twoth area, and reactor core solution inner region arranges 3～6 control rod guide tubes
Built-in control rod, reactor core solution outskirt arranges cooling tube；Core vessel bottom arranges heap bottom neutron reflector, molten in corresponding fuel
On the outside of the core vessel wall of liquid, heap side neutron reflector is set, is supported for core vessel below the neutron reflector of heap bottom；Fuel is molten
Above liquid reactor core air cavity connection core vessel outside reactor core air circuit, the air circuit by gas preheater, hydrogen oxygen recombination device,
Moisture trap, aerator are composed in series；In addition to the reactor core air circuit outside core vessel, remaining include whole core vessel,
Heap side neutron reflector, heap bottom neutron reflector and following core vessel are supported and are immersed in heap pond；Outside heap pond
Face arranges the heap Room；
The method for solving " homogeneous solution-type reactor " solution nuclear reactor power swing under high power of the present invention, takes following technology to arrange
Apply：
1st, the film-cooled heat for increasing cooling tube improves the degree of supercooling of solution, reduces the effusion of (gas+vapour) bubble；For " Argus "
The area of heap cooling coil, " homogeneous solution-type reactor " solution reaction heap of this case, by the cooling tube area of reactor core solution outskirt arrangement, design
To >=3.5m2, it is more than ten times of " Argus " heap cooling coil area.
2nd, to this case " homogeneous solution-type reactor " solution reaction heap, the cooling tube of reactor core solution outskirt is arranged in the low of reactor core solution
Power density area.
3rd, the core vessel air cavity for abandoning device before this is negative pressure, the heap Room is the design of tiny structure, and this case is held using reactor core
Device air cavity is designed for malleation, reduces the volume that core vessel produces bubble, that is, reduce volume integral of the bubble in reactor core solution
Volume, to reduce impact of the air bladder accumulated amount to reactivity.
Current kettle type of furnace solution reaction heap, its core vessel air cavity air pressure be all negative pressure, the heap Room be tiny structure, this be because
It is all two seals barrier for the heap-type：First sealing barrier is constituted by core vessel and air circuit, is made up of the sealing of the heap Room
Second sealing barrier.The sealing of so structure being capable of effective guarantee：When being sealed with and to a certain degree destroying for first, the heap Room
Gas is to first sealing internal leakage, and radgass will not enter the heap Room, thus avoid dirt of the radgass to environment
Dye.
The present invention is to reduce the volume that core vessel produces bubble, reduces impact of the bubble to reactivity, core vessel
Air cavity must be designed using malleation, its safeguard be using three seals barrier：
The air circuit that is connected by core vessel and outside constitutes first sealing barrier of solution reactor, core vessel air cavity and
The air pressure of reactor core air circuit is malleation；By heap pond together with the heap cell that is fitted with reactor core air circuit sealing barrier by its
Isolate with the heap Room, the second sealing barrier of solution reactor is constituted, in the sealing barrier, the air pressure of heap cell is negative pressure；The heap Room is constituted
The three seals barrier of solution reactor, heap Room air pressure is tiny structure.Heap Room outside environment has been ensured by this three seals barrier
Safety；And the malleation of reactor core air cavity and reactor core air circuit, control significantly a large amount of (gas+vapour) foam accumulated amounts of reactor core solution effusion
Impact to reactivity.
4th, the air pressure for implementing air circuit in first sealing barrier is malleation, using the thin film compressor being arranged in the heap Room
Realize to air circuit pressurization, it is ensured that the air pressure in reactor core air cavity is a large amount of (gas+vapour) foams product for malleation, controlling solution effusion
Measure the impact to reactivity；The air pressure for implementing heap cell in second sealing barrier is negative pressure, is evacuated using vacuum suction unit
Realize；It is tiny structure to implement the air pressure in the three seals barrier heap Room, is realized using conventional induced ventilation unit pumping.
5th, in the reactor core air circuit of connection core vessel air cavity, rupture disk is set before hydrogen oxygen recombination device and eliminates punching
The device of ripple is hit, to mitigate the quick-fried impact to second sealing barrier of hydrogen, guarantee environment safety.
The present invention has the prominent advantages that：Due to employing the degree of supercooling for increasing that cooling tube film-cooled heat improves solution；Will
Reactor core solution cooling tube is arranged in reactor core solution low power density area；The radioactive sealed shielding of solution reactor is set to three roads close
Envelope barrier：First sealing barrier is to arrange reactor core air cavity and reactor core air circuit is malleation, and hydrogen oxygen recombination device in the loop
Above rupture disk is set and eliminates the device of shock wave；Second sealing barrier is the heap cell for arranging negative pressure, three seals
Barrier is the heap Room with tiny structure；Using these three comprehensive technical measures, when effectively having controlled nuclear reaction, reactor core solution is produced
Raw a large amount of (gas+vapour) foam accumulated amounts escape the impact to heap power swing；And this three seals shielding, rupture disk and elimination punching
The use of wave apparatus is hit, has also effectively ensured safety and the protection to heap Room outside environment of reactor.
Description of the drawings
Fig. 1 is three road barrier protection schematic diagram of " homogeneous solution-type reactor " solution nuclear reactor under high power of the present invention
In figure labelling：1 supports for core vessel, 2 is heap bottom neutron reflector, 3 is heap side neutron reflector, 4 is reactor core
Container, 5 be core vessel in nuclear fuel solution, 6 be core vessel nuclear fuel solution above air cavity, 7 be reactor core air circuit
In gas preheater, 8 be reactor core air circuit in hydrogen oxygen recombination device, 9 be reactor core air circuit in moisture trap, 10 be heap
Aerator in core air circuit, 11 be reactor core air circuit, 12 be second sealing barrier, 12-1 be second sealing barrier in
Heap pond, 12-2 for heap pond water surface top contain reactor core air circuit negative pressure heap cell, 13 for constitute three seals barrier
The heap Room, 13-1 be heap Room protection walls.
Specific embodiment
Embodiment：The method for overcoming 200kW high-enriched uranium " homogeneous solution-type reactor " solution reactor power swing
This case 200kW high-enriched uranium " homogeneous solution-type reactor " solution reaction heap, heap power density is 2.0～2.5kW/L, to include following
Basic structure：The perpendicular dress rustless steel core vessel 4 that is closed using flat or dish bottom column type, in core vessel 4 built with body
Product is the nuclear fuel high-enriched uranium UO of 50L～100L2(NO3)2Solution 5, the core vessel cavity portion on fuel solution 5 is
Air cavity 6；Reactor core solution 5 is divided into inside and outside twoth area, and the conduit of 3～6 built-in control rods, heap is provided with 5 inner region of reactor core solution
The outskirt of core solution 5 arranges radial or uniform cooling tube；4 bottom of core vessel arranges heap bottom neutron reflector 2, is corresponding to
Heap side neutron reflector 3 is set on the outside of the core vessel wall of fuel solution 5, and heap bottom neutron reflector 2 is propped up for core vessel below
Support 1；Air cavity 6 in core vessel on liquid level of solution connects the reactor core air circuit 11 of 4 outside of core vessel, the reactor core air circuit 11
Composed in series by gas preheater 7, hydrogen oxygen recombination device 8, moisture trap 9, aerator 10；Reactor core except 4 outside of core vessel
Outside air circuit 11, remaining includes whole core vessel 4, heap side neutron reflector 3, heap bottom neutron reflector 2 and following reactor core
Container support 1 is immersed in the water of heap pond 12-1；Outside heap pond (12-1), the heap Room (13) is set；
High-enriched uranium UO in core vessel 42(NO3)2Hydrogen, carrier of oxygen produced by solution, enters reactor core gas from air cavity 6 and returns
Road 11, hydrogen, carrier of oxygen is combined into backspace core vessel 4 after water, to maintain UO in core vessel2(NO3)2Fuel solution dense
Density of hydrogen in degree and air cavity 6；
The method for overcoming this case 200kW " homogeneous solution-type reactor " solution reactor power swing, takes following technique measures：
1st, the film-cooled heat for being arranged in the radial or uniform cooling tube of 5 outskirt of solution is increased, the degree of supercooling of solution 5 is improved,
Reduce the effusion of (gas+vapour) bubble, for the area of " Argus " heap cooling coil, by the radial of 5 outskirt of this case reactor core solution arrangement
Or the area design of uniform cooling tube is >=3.5m2, that is, it is at least ten times of " Argus " heap cooling coil area.
2nd, the radial or uniform cooling tube of 5 outskirt of reactor core solution will be arranged in, be arranged on the low-power of reactor core solution 5
Density region.
3rd, core vessel air cavity (6) and reactor core air circuit (11) are designed using malleation, reduces core vessel and produce bubble
Volume, that is, reduce volume share of the bubble in reactor core solution, with reduce bubble to reactivity impact.
Current kettle type of furnace solution reaction heap, the air pressure of its core vessel air cavity is all negative pressure, this is because the heap-type is all
Be using two seals barrier：First sealing barrier with negative pressure is constituted by core vessel and reactor core air circuit, by having
The heap Room sealing of tiny structure constitutes second sealing barrier.The sealing of so structure being capable of effective guarantee：When first is sealed with
When to a certain degree destroying, heap Room gas is to first sealing internal leakage, and radgass will not enter the heap Room, thus avoid and put
Pollution of the penetrating property gas to environment.
The present invention is to reduce the volume that core vessel produces bubble, to reduce impact of the bubble to reactivity, to reactor core
Container air cavity must be designed using malleation, its safeguard be using three seals barrier：
The reactor core air circuit 11 that is connected by core vessel 4 and outside, constitutes first sealing barrier of solution reactor, reactor core gas
The air pressure of chamber and reactor core air circuit 11 is 0.4MPa (for 4 atmospheric pressure)；
By heap pond 12-1 and heap cell 12-2 equipped with reactor core air circuit 11, with one sealing barrier 12 by itself and the heap Room
13 isolation, constitute the second sealing barrier being made up of heap pond 12-1 and heap cell 11, and the air pressure of heap cell 11 is
0.086MPa (for negative pressure)；
The heap Room 13 constitutes the three seals barrier of solution reactor, and 13 air pressure of the heap Room is 0.099MPa (for tiny structure), the heap Room
The ambient pressure of 13 outside of protection walls is 0.1MPa (for 1 atmospheric pressure)；
This three seals barrier, is effectively prevented escape of radioactivity and has ensured Environmental security.
As in first sealing barrier, 11 internal gas pressure of reactor core air circuit is 0.4MPa, and the air pressure of heap cell 11 is
0.086MPa, after rupture disk explosion in reactor core air circuit 11, the air pressure of second sealed reactor cell 11 can rise to ＜
0.090MPa, and the air pressure in the heap Room 13 is the air pressure of the air pressure less than the heap Room 13 of 0.099MPa, heap cell 11, with existing apparatus two
The shield effectiveness of road sealing barrier is suitable.Therefore, this design sees according to environmental assessment, the impact to environment is to receive.So
And as reactor core air cavity 6 and 11 air pressure of reactor core air circuit are 0.4MPa, the significantly larger than negative pressure of existing apparatus core vessel air cavity
Value, can effectively control the effusion of reactor core solution a large amount of (gas+vapour) bubble and cause to escape shadow of (gas+vapour) the foam accumulated amount to reactivity
Ring.
4th, the air pressure for implementing reactor core air circuit in first sealing barrier is 0.4MPa, thin in the heap Room 13 using being arranged on
Film compressor is realized to the pressurization of reactor core air circuit, it is ensured that the air pressure in reactor core air cavity 6 effectively control solution effusion a large amount of (gas+
Vapour) impact of the foam accumulated amount to reactivity；The air pressure for implementing heap cell 11 in second sealing barrier is 0.086MPa, using true
Empty pumping machine assembly air-exhausting realization；It is 0.099MPa to implement the air pressure in the three seals barrier heap Room 13, using conventional convulsion
Ventilation machine assembly air-exhausting realization.
5th, in the reactor core air circuit 11 of connection core vessel air cavity 6, rupture disk and elimination are set before hydrogen oxygen recombination device 8
Impact wave apparatus, to mitigate the quick-fried impact to second sealing barrier of hydrogen, ensure reactor core safety.
Claims (1)
1. the method for solving " homogeneous solution-type reactor " solution nuclear reactor power swing under high power, including：To heap power>100kW, heap work(
Rate density is 2.0～2.5kW/L, " homogeneous solution-type reactor " solution reactor with following basic structures：1. seal in flat or dish bottom column type
Close in the rustless steel core vessel (4) of perpendicular dress, equipped with volume for 50L～100L nuclear fuel UO2(NO3)2Solution (5), fuel is molten
Liquid (5) container cavity part above is reactor core air cavity (6)；2. the fuel solution (5) in core vessel (4) divides inside and outside twoth area,
Solution inner region is provided with the built-in control rod of 3～6 control rod guide tubes, cooling tube is arranged in solution outskirt；3. in core vessel
(4) bottom arranges heap bottom neutron reflector (2), arranges heap side neutron reflector in the outside vessel wall of corresponding fuel solution (5)
(3), heap bottom neutron reflector (2) supports (1) for core vessel below；4. the reactor core air cavity (6) above fuel solution connects heap
Reactor core air circuit (11) outside core container (4), the reactor core air circuit (11) by gas preheater (7), hydrogen oxygen recombination device (8),
Moisture trap (9), aerator (10) are composed in series；In addition to the reactor core air circuit (11) outside core vessel (4), remaining includes
Whole core vessel (4), heap side neutron reflector (3), heap bottom neutron reflector (2) and following core vessel support (1) all
It is immersed in heap pond (12-1) inner；Outside heap pond (12-1), the heap Room (13) is set；
" homogeneous solution-type reactor " solution nuclear reactor of this basic structure is included, and overcomes which that power waves are produced under high power operation
Dynamic, it is characterised in that to take following technique measures to be controlled：
A, increasing are arranged in solution (5) outskirt cooling tube area, improve the degree of supercooling of solution, reduce the effusion of (gas+vapour) bubble；
B, cooling tube is arranged in the low power density area of reactor core solution (5)；
C, abandon device before this core vessel air cavity be negative pressure, the heap Room for tiny structure design, using core vessel air cavity be
Malleation is designed, and reduces the volume that core vessel produces bubble, that is, reduce volume share of the bubble in reactor core solution, to reduce
Impact of the air bladder accumulated amount to reactivity；Its safeguard be using three seals barrier：
1. the reactor core air circuit (11) that is connected by core vessel (4) and outside constitutes first sealing barrier of solution reactor, sealing
In barrier, the air pressure of core vessel (4) and air circuit (11) is malleation；
2. by heap pond (12-1) and the heap cell (12-2) of reactor core air circuit (11) is fitted with, with one sealing barrier (12)
Which is isolated with the heap Room (13), the second sealing barrier of solution reactor is constituted, the air pressure of heap cell (12-2) is negative pressure；
3. the three seals barrier of solution reactor is made up of the heap Room (13), and the heap Room (13) air pressure is tiny structure；This three seals screen
Barrier has ensured the safety of heap Room protection walls (13-1) outside environment；And the air pressure of core vessel air cavity (6) is malleation, to control significantly
Impact of a large amount of (gas+vapour) the foam accumulated amounts that reactor core solution (5) is escaped to reactivity.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994242A (en) * | 2017-12-29 | 2019-07-09 | 中国核动力研究设计院 | A method of it is moved in solution reactor for simulating radiolysis bubble |
| CN110329784A (en) * | 2019-08-01 | 2019-10-15 | 清华大学 | Conveying device and process equipment |
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