CN1731533A - Regular bed modular high temperature gas cooled reactor and its fuel sphere disposal method - Google Patents
Regular bed modular high temperature gas cooled reactor and its fuel sphere disposal method Download PDFInfo
- Publication number
- CN1731533A CN1731533A CNA2005100929733A CN200510092973A CN1731533A CN 1731533 A CN1731533 A CN 1731533A CN A2005100929733 A CNA2005100929733 A CN A2005100929733A CN 200510092973 A CN200510092973 A CN 200510092973A CN 1731533 A CN1731533 A CN 1731533A
- Authority
- CN
- China
- Prior art keywords
- reactor
- reactor core
- high temperature
- fuel sphere
- temperature gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C1/00—Reactor types
- G21C1/04—Thermal reactors ; Epithermal reactors
- G21C1/06—Heterogeneous reactors, i.e. in which fuel and moderator are separated
- G21C1/07—Pebble-bed reactors; Reactors with granular fuel
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C5/00—Moderator or core structure; Selection of materials for use as moderator
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention relates to a rule bed module type high temperature gas-cooled reactor and fuel ball arranging method in the field of nuclear reactor technology. It arranges the helium inside the graphite block reflector. The control rod and the absorbing small ball are position inside the graphite block reflector. The flue ball is quadratic arranged on the level of the graphite block reflector hollow cavity, the center deck of each four balls can be used as the location of the second layer ball so as to form the rule bed with the up end and the down end is graphite block reflector.
Description
Technical field
The present invention relates to a kind of regular bed modular high temperature gas cooled reactor and fuel sphere disposal method thereof, belong to the nuclear reactor technology field.
Background technology
High temperature gas cooled reactor is that the security of generally acknowledging in the world is good, generating efficiency is high, broad-spectrum advanced nuclear reactor heap type.Because adopting resistant to elevated temperatures ceramic mould coating particle is fuel, inert gas helium is cooling medium, and graphite is moderator and core structural material, makes it can produce the above high temperature of 950 degree, not only high-level efficiency is generated electricity, and has wide practical use at aspects such as coal gasification and liquefaction, hydrogen manufacturing.
MHTR in that occur the nineties in last century makes this technology obtain bigger progress.MHTR is a feature with miniaturization and inherent safety, under the accident conditions of forfeiture cooling medium, still can rely on heat conduction and the heat radiation waste heat that sheds, and keeps fuel and reactor core complete, has fundamentally discharged the possibility of core meltdown.Meanwhile, simply and the efficiently direct power generation technology of helium gas turbine of the system that matches with MHTR has also been proposed, make the small modules heap have the economic competitiveness of comparing with large nuclear power station, be subjected to extensive attention, be called advanced nuclear power system of the 4th generation in the world.
MHTR has two kinds of designs, and a kind of is prismatic fuel assembly type based on former American technology, serves as the commercialization 600 megawatt reactors of main design with the U.S., Russia, Japan at present, is called for short piece type heap.Principal character is to pile up anabolic reaction heap reactor core, periodic shutdown refuelling with the large-scale graphite block that comprises fuel particle.
Another kind is the spheric fuel element heap type based on former Germany technology, serves as the commercialization 400 megawatt reactors of main design with South Africa, China at present, is called for short pebble bed reactor.Principal character is to make the fuel sphere of 60 mm dias with fuel particle and graphite, and a large amount of fuel spheres forms reactor core with random accumulation mode.In reactor operation, fuel sphere is added continuously by the top, draws off continuously from the bottom, does not need the shutdown refuelling.
In addition, before the eighties in last century, the module stack notion occurred,, in 051,230, the pebble bed reactor of another kind of interpolation fuel sphere method has been proposed at U.S. Pat P5.Each cold-refueling only fills up the part cavity, wherein quantity of fuel reaches the initial requirement of reactor operation, adds fuel sphere continuously to the cavity remainder after the reactor operation, the fuel sphere that do not draw off in service, all fill up the back shutdown to cavity, disposablely draw off whole fuel.The fuel sphere that wherein proposes to insert in the cavity can be random stacked form, also can be that rule is piled up the formation rule bed.
It is simple that pebble bed reactor has a core structure, and the fuel element cost is low, be suitable for batch process, intensity height, good stability, be convenient to carry and store, can reach advantage such as dark burnup.But the fuel sphere of random accumulation moves in reactor core from the top down, can not obtain best power and Temperature Distribution, although fuel sphere on average passed through the reactor core number of times more than 10 times before becoming spentnuclear fuel, but axially with radially the power nonuniformity coefficient is all very big, make that in the limited bulk of modular reactor the maximum heat outputting power of reactor can only reach about 400 megawatts.It is big to add pebble bed core ANALYSIS OF COOLANT FLOW resistance, and when adopting the direct circulating generation of helium gas turbine, the high-level efficiency measure that reduces temperature difference augmented flow is restricted, so its clean generating efficiency only is about 41%.And the piece type piles not only that thermal power is output as 600 megawatts, and also about 47%, two kinds of MHTR electric power outputs are mutually far short of what is expected for its clean generating efficiency.
Summary of the invention
The objective of the invention is to propose a kind of regular bed modular high temperature gas cooled reactor and fuel sphere disposal method thereof, reach major advantage, can reduce the circulate coolant resistance again and improve the purpose of power output with pebble bed reactor.
The regular bed modular high temperature gas cooled reactor that the present invention proposes comprises fuel sphere reactor core, graphite block reflection horizon, control rod, absorption bead, Steel Pressure Vessels; Described graphite block reflection horizon places in the Steel Pressure Vessels; Described reactor core places in the cavity of graphite block reflection horizon formation, and reactor core is solid column or open column shape, is equipped with helium in reactor core and the graphite block reflection horizon; Described control rod or absorption bead place graphite reflector; It is characterized in that on the surface level of fuel sphere in the graphite reflector cavity that quadrate is arranged, the depression that per 4 ball center form becomes the position of time one deck ball, accumulates the formation rule bed layer by layer with this, and rule bed upper and lower side is a graphite reflector.
In the above-mentioned regular bed modular high temperature gas cooled reactor, in the rule bed on any one surface level the centre distance of adjacent fuel sphere be D, 1.03d＜D＜1.21d, wherein d is the fuel sphere diameter, forms the through hole that runs through reactor core up and down between fuel sphere.
In the above-mentioned regular bed modular high temperature gas cooled reactor, when reactor core is solid column, the surface in the graphite block reflection horizon of reactor core sidewall has two kinds, first kind is the plane, second kind for being distributed with vertical protrusion rib or boss on the plane, and the level interval between rib or the boss is the centre distance D of fuel sphere, first kind of plane and second kind of plane apart from one another by, the normal angle on two kinds of planes is 45 degree, the reactor core that is surrounded by this sidewall be as the criterion octagon, polygon or quasi-circular column.
In the above-mentioned regular bed modular high temperature gas cooled reactor, when reactor core is open column shape, the surface in the graphite block reflection horizon of the inside and outside sidewall of reactor core has two kinds, first kind is the plane, second kind is to be distributed with vertical protrusion rib or boss on the plane, level interval between rib or the boss is the centre distance D of fuel sphere, first kind of plane and second kind of plane apart from one another by, the normal angle on two kinds of planes is 45 degree, and the reactor core cross section that is surrounded by this sidewall is the accurate octagon of ring-type, ring-type polygon or ring-type quasi-circular.
In the above-mentioned regular bed modular high temperature gas cooled reactor, the surface of graphite reflector cavity floor is the plane, is distributed with in the plane and the square arrangement of fuel sphere depression, boss or square net accordingly.
In the above-mentioned regular bed modular high temperature gas cooled reactor, the graphite block reflection horizon adjacent with the reactor fuel ball is graphite nodule.
In the above-mentioned regular bed modular high temperature gas cooled reactor, on pressure vessels top cover, have the dress dumping pit corresponding with annular reactor core.
The invention allows for the fuel sphere disposal method of regular bed modular high temperature gas cooled reactor, the fuel sphere of 2～5 first kind of burn-up levels is set at the inner region of ring-type reactor core, outskirt is provided with the fuel sphere of 2～5 second kind of burn-up levels, and the center is provided with the fuel sphere of remaining the third burn-up level.
Designed regular bed modular high temperature gas cooled reactor of the present invention and fuel sphere disposal method thereof, compared following advantage with existing pebble bed reactor with piece type heap:
1, the reactor fuel ball adopts regular method for arranging in the present invention's design, and each ball all has fixing position, therefore can obtain best power and Temperature Distribution, and higher output power is arranged.
2, designed regular bed reactor reactor core of the present invention is the structure of a kind of similar " crystallization ", adaptability and stability with height, allow cooling medium to become multipaths or horizontal direction flows, thereby reduce ball bed resistance to flow significantly, improve energy conversion efficiency from the single vertical direction flow process.
3, regular bed modular high temperature gas cooled reactor of the present invention and fuel sphere disposal method thereof, major advantage with existing pebble bed reactor, the spheric fuel element of single variety is convenient to development and low-cost batch production, structural strength height, the irradiation stability of fuel sphere are good, be convenient to conveying and storage under the shielding condition, fuel sphere reaches more uniform dark burnup in the time of can it being drawn off through burnup measurement.
4, regular bed modular high temperature gas cooled reactor of the present invention is compared with pebble bed reactor, and rule bed bulk density height is in the loss that has compensated on the part degree on the neutron economy that can not continuous fuel replacement causes.
5, in the regular bed modular high temperature gas cooled reactor of the present invention, the strong irradiated site of part fast neutron adopts the graphite nodule reflection horizon, reduces and avoided the replacing of graphite block.
Though 6, regular bed modular high temperature gas cooled reactor of the present invention moves in batch mode of reloading identical with piece type heap, it is simple that spheric fuel element loads and unloads required equipment, loads and unloads required shutdown time weak point.
7, the fuel handling of regular bed modular high temperature gas cooled reactor of the present invention is to carry out under shutdown and low-temp low-pressure condition, therefore compares with pebble bed reactor, need not safeguard handling machinery and system in reactor operation; Do not need to pile end discharging, make the heap bottom structure simple, the pressure vessel size reduces.
8, existing pebble bed reactor is to different size and the design of difform reactor core, all need to carry out separately pebble flow experiment, rule bed in the regular bed modular high temperature gas cooled reactor of the present invention, each ball all has fixing position, therefore do not need these experiments, do not need the flow characteristics of this fuel sphere is coupled in neutron design and the thermal-Hydraulics Design yet, simplified the experiment and the design in engineering early stage.
9, regular bed modular high temperature gas cooled reactor of the present invention utilizes the through hole run through reactor core, when reactor start-up, can obtain the accurate measured value that the axially and radially neutron fluence rate of actual reactor core distributes, and is very favourable to hoisting power and correction calculation instrument.
Description of drawings
Fig. 1 is the regular bed modular high temperature gas cooled reactor longitudinal profile;
Fig. 2 a is 1/8th views in ring-type octagon reactor core cross section;
Fig. 2 b is B-B longitudinal profile among Fig. 2 a;
Fig. 3 is 1/4th views in solid column octagon reactor core cross section;
Fig. 4 is 1/8th baton round models of ring-type octagon reactor core;
Fig. 5 is regular bed modular high temperature gas cooled reactor ring-type reactor core transverse section;
Fig. 6 is for unloading ball machine longitudinal profile;
Fig. 7 a is radial zone separation scraper transverse section;
Fig. 7 b is D-D longitudinal profile among Fig. 7;
Fig. 7 c is E-E longitudinal profile among Fig. 7.
Fig. 1 a, b, c, d, among the e, a is regular bed modular high temperature gas cooled reactor open column shape reactor core of the present invention longitudinal profile; B is that discharging begins; C is that discharging is finished; D is for using the charging of radial zone separation scraper; E is the solid column reactor core of regular bed modular high temperature gas cooled reactor of the present invention longitudinal profile; The 1st, shutdown cooling system; The 2nd, absorb the bead unloader; The 3rd, the coolant outlet header; The 4th, absorb the bead control system; The 5th, following graphite nodule reflection horizon; The 6th, rule bed open column shape reactor core; The 7th, control rod; The 8th, last graphite nodule reflection horizon; The 9th, pressure vessel; The 10th, pressure vessels top cover; The 11st, unload the ball machine; The 12nd, absorb the bead reservoir; The 13rd, control rod drive mechanisms (CRD); The 14th, the dress dumping pit; The 15th, pulping apparatus; The 16th, the radial zone separation scraper; The 17th, graphite nodule inner reflection layer; The 18th, reflection horizon, the graphite nodule outside; The 19th, outer graphite block reflection horizon; The 20th, interior graphite block reflection horizon; The 21st, the solid column reactor core of rule bed.
Among Fig. 2 a, Fig. 2 b and Fig. 3, d is the fuel sphere diameter; D is fuel sphere and the level interval of protruding rib; The 22nd, run through complete through hole; The 23rd, flat sidewall; The 24th, the sidewall that protrudes rib is arranged on the plane; The 25th, fuel sphere; The 26th, the graphite block base plate; The 27th, the bulb-shaped recess on the graphite block base plate; The 28th, protrude rib.
Among Fig. 5, a octagon that is as the criterion; B is a quasi-circular; C is the accurate octagon that graphite nodule lateral reflection layer is arranged; D is the quasi-circular that graphite nodule lateral reflection layer is arranged; The 29th, pressure vessels top cover dress dumping pit correspondence position.
Among Fig. 6, the 30th, the circular cone head; The 31st, the pipe of losing; The 32nd, support.
Fig. 7 a, b, among the c, A, B, C are the radial portion that is separated; The 33rd, thin cluster; The 34th, porous plate.
Embodiment
The regular bed modular high temperature gas cooled reactor that the present invention proposes, its structure comprise fuel sphere reactor core 6 and 21, graphite block reflection horizon 19 and 20, control rod 7, absorb bead 4, Steel Pressure Vessels 9 as shown in Figure 1.Graphite block reflection horizon 19 and 20 places in the Steel Pressure Vessels 9; Described reactor core 6 and 21 places in graphite block reflection horizon 19 and 20 cavitys that form, and reactor core is solid column 21, shown in Fig. 1 e, or open column shape 6, as shown in Figure 1a, be equipped with helium in reactor core and the graphite block reflection horizon.Control rod 7 or absorption bead 4 place graphite reflector 19 and 20; It is characterized in that on the surface level of fuel sphere 25 in the graphite reflector cavity that quadrate is arranged, the depression that per 4 ball center form becomes the position of time one deck ball, accumulates the formation rule bed layer by layer with this, and rule bed upper and lower side is a graphite reflector.
In the above-mentioned regular bed modular high temperature gas cooled reactor, shown in Fig. 2 b, in the rule bed on any one surface level the centre distance of adjacent fuel sphere be D, 1.03d＜D＜1.21d, wherein d is fuel sphere 25 diameters, forms the through hole 22 that runs through reactor core up and down between fuel sphere.
In the above-mentioned regular bed modular high temperature gas cooled reactor, shown in Fig. 1 e, when reactor core is solid column 21, the surface in the graphite block reflection horizon of reactor core sidewall has two kinds, first kind is plane 23, second kind is to be distributed with vertical protrusion rib 28 or boss on the plane 24, level interval between rib or the boss is the centre distance D of fuel sphere, first kind of plane 23 and second kind of plane 24 apart from one another by, the normal angle on two kinds of planes is 45 degree, the reactor core that surrounds by this sidewall be as the criterion octagon, polygon or quasi-circular column, as shown in Figure 3.
In the above-mentioned regular bed modular high temperature gas cooled reactor, as shown in Figure 1a, when reactor core is open column shape 6, the surface in the graphite block reflection horizon of the inside and outside sidewall of reactor core has two kinds, first kind is plane 23, second kind is to be distributed with vertical protrusion rib 28 or boss on the plane 24, level interval between rib or the boss is the centre distance D of fuel sphere, first kind of plane 23 and second kind of plane 24 apart from one another by, the normal angle on two kinds of planes is 45 degree, the reactor core cross section that is surrounded by this sidewall is the accurate octagon of ring-type, ring-type polygon or ring-type quasi-circular, as shown in Figure 5.
In the above-mentioned regular bed modular high temperature gas cooled reactor, shown in Fig. 2 b, the surface of graphite reflector cavity floor 26 is the plane, is distributed with in the plane and the corresponding depression 27 of the square arrangement of fuel sphere, boss or square net.
In the above-mentioned regular bed modular high temperature gas cooled reactor, as Fig. 1 a, Fig. 1 e and shown in Figure 5, the graphite block reflection horizon adjacent with the reactor fuel ball can be graphite nodule 5,8,17,18.
In the above-mentioned regular bed modular high temperature gas cooled reactor, on pressure vessels top cover, have the dress dumping pit 14 corresponding with annular reactor core.
The invention allows for the fuel sphere disposal method of regular bed modular high temperature gas cooled reactor, shown in Fig. 7 a, the fuel sphere of 2～5 first kind of burn-up levels is set at the inner region C of ring-type reactor core, outskirt A is provided with the fuel sphere of 2～5 second kind of burn-up levels, and center B is provided with the fuel sphere of remaining the third burn-up level.
In the base plate and the formed cavity of sidewall of the present invention design, when ball during random falling into, is arranged automatic formation rule on rule bed model as shown in Figure 4 from the top.
The reactor fuel ball adopts and once all packs into and the method for operation of reloading of criticizing that once all draws off in the present invention's design, each ball all has fixing position, when equilibrium core is packed fuel into, according to the axially and radially requirement of best power and Temperature Distribution, on different axial heights, to A, B, C three subregions radially, shown in Fig. 7 a, the provide and deliver fuel sphere of different burn-up levels is so that obtain lower maximum fuel temperature and higher power output.
Fuel sphere packs into and draws off all and finish by the perforate on the pressure vessels top cover in the present invention design.Have 8 holes in one embodiment of the present of invention, as shown in Figure 5, the ball machine 11 that unloads is controlled by top drilling in the center 29 of top drilling correspondence 1/8th toroidal reactor cores.As shown in Figure 6, when the circular cone head 30 that unloads ball machine 11 rotated and descend, by the pipe 31 of losing, helium flow can be with ball transferring out one by one.
Designed regular bed reactor reactor core of the present invention is the structure of a kind of similar " crystallization ", adaptability and stability with height, it no matter is fluctuation from internal temperature and pressure, the fuel sphere that temperature and irradiation cause and the finite deformation of structured material, still can not cause reactor core ball bed density and regularly arranged variation from the strong influence of outside (as earthquake etc.), can not produce reactive influence.This adaptability and stability allow cooling medium from different directions by reactor core, flow and existing pebble bed reactor can only allow from top to bottom that self gravitation direction with ball coincides.Rule bed then allows the single vertical direction flow process is become multipaths, as about the mind-set therefrom, or, perhaps become horizontal direction and flow from the upward and downward center (Fig. 1 a left side), as from the periphery of ring-type reactor core to center flow (Fig. 1 a right side).Multipaths and horizontal flow be to can both reducing ball bed resistance to flow significantly, thereby improve energy conversion efficiency.
The graphite block reflection horizon that allows to be close to the fuel sphere district in the present invention design is by forming with the graphite nodule of the same diameter of fuel sphere, for example: the reflection horizon can be made up of graphite nodule 5 and 8 about the part, does not influence cooling medium perpendicular flow (Fig. 1 a left side).When coolant level flowed, the inside and outside lateral reflection layer of the part of ring-type reactor core also can be made of (Fig. 1 a right side and Fig. 5 c and d) graphite nodule 17 and 18.Because the graphite reflector of vicinity core region is subjected to strong fast neutron irradiated, at the interim consideration replacing graphite block that needs of reactor operation longevity.Adopt graphite nodule to do the reflection horizon at the strong irradiated site of fast neutron, then can reduce or avoid the replacing problem of graphite block, improved the reactor utilization factor.But when reloading operation, graphite nodule and fuel sphere need draw off and pack into simultaneously, have increased the loading and unloading quantity of each ball.
In order to give designed regular bed reactor dress ball of the present invention, can also design the pulping apparatus shown in Fig. 1 d, by the pulping apparatus 15 that the pressure vessels top cover perforate is controlled, radial zone separation scraper 16 can also be installed in the pulping apparatus lower end.As shown in Figure 7, separation scraper 16 is made up of porous plate 34 and thin cluster 33, and the hole on the porous plate is greater than bulb diameter, and through hole 22 between ball is inserted in thin cluster lower end, and reactor core radially is isolated into multi-region, enters corresponding zone to guarantee different fuel spheres or graphite nodule.After space under the porous plate was filled up by ball, separation scraper upwards rose to reposition, to guarantee the rising along with axial accumulation, radially can add different fuel spheres or graphite nodule.
Designed regular bed reactor of the present invention, can also pack in pressure vessel visible light source or certain radiographic source, and the detector of packing into are implemented the scanning monitoring in rule bed forming process.When a large amount of balls falls into simultaneously, the random ball bear against mutually might appear in the part, and from scanning imagery, be very easy to find the through hole 22 that runs through full bed and be blocked.At this moment can adopt the local vibration method, as local air flow impact, separation scraper vibration or the impact etc. of falling sphere down, random ball has stronger self-healing ability, is easy to recover regularly arranged.Implement the scanning monitoring and can guarantee that rule carries out aheap smoothly.
The reactor core size of an embodiment of the MHTR of the present invention's design is as follows: shown in Fig. 2 b, the fuel sphere diameter d is 60mm, and fuel sphere centre distance D is 70mm.Shown in Fig. 5 a, the outerplanar of accurate octagon ring-type reactor core is of a size of 4610mm, and inner plane is of a size of 2950mm, and its equivalent external diameter is 4790mm, and the equivalent internal diameter is 3010mm.The reactor core height is 8003mm, 513064 of the fuel spheres of packing into altogether.Shown in Fig. 1 a left side, graphite nodule reflection horizon 8 and 5 highly is 610mm up and down, 78264 of the graphite nodules of packing into altogether.
The principle of design of MHTR is to lose under the accident condition of cooling medium, relies on heat conduction and heat radiation by the pressure vessel dissipate excess heat, keeps the fuel maximum temperature to be no more than the limiting design value of 1600 degree, has inherent safety.Under same condition, the embodiment of designed regular bed modular high temperature gas cooled reactor of the present invention, to have the major advantage of spheric fuel element, and less ANALYSIS OF COOLANT FLOW resistance be arranged and surpass existing pebble bed reactor and the maximum heat power of piece type heap, thereby have more economic competitiveness.
Claims (8)
1, a kind of regular bed modular high temperature gas cooled reactor, this gas-cooled reactor comprise fuel sphere reactor core, graphite block reflection horizon, control rod, absorption bead, Steel Pressure Vessels; Described graphite block reflection horizon places in the Steel Pressure Vessels; Described reactor core places in the cavity of graphite block reflection horizon formation, and reactor core is solid column or open column shape, is equipped with helium in reactor core and the graphite block reflection horizon; Described control rod or absorption bead place graphite reflector; It is characterized in that on the surface level of fuel sphere in the graphite reflector cavity that quadrate is arranged, the depression that per 4 ball center form becomes the position of time one deck ball, accumulates the formation rule bed layer by layer with this, and rule bed upper and lower side is a graphite reflector.
2, regular bed modular high temperature gas cooled reactor as claimed in claim 1, it is characterized in that in the described rule bed that the centre distance of adjacent fuel sphere is D on any one surface level, 1.03d＜D＜1.21d, wherein d is the fuel sphere diameter, forms the through hole that runs through reactor core up and down between fuel sphere.
3, regular bed modular high temperature gas cooled reactor as claimed in claim 1, when it is characterized in that reactor core is solid column, the surface in the graphite block reflection horizon of reactor core sidewall has two kinds, first kind is the plane, second kind is to be distributed with vertical protrusion rib or boss on the plane, level interval between rib or the boss is the centre distance D of fuel sphere, first kind of plane and second kind of plane apart from one another by, the normal angle on two kinds of planes is 45 degree, the reactor core that is surrounded by this sidewall be as the criterion octagon, polygon or quasi-circular column.
4, regular bed modular high temperature gas cooled reactor as claimed in claim 1, when it is characterized in that reactor core is open column shape, the surface in the graphite block reflection horizon of the inside and outside sidewall of reactor core has two kinds, first kind is the plane, second kind is to be distributed with vertical protrusion rib or boss on the plane, level interval between rib or the boss is the centre distance D of fuel sphere, first kind of plane and second kind of plane apart from one another by, the normal angle on two kinds of planes is 45 degree, and the reactor core cross section that is surrounded by this sidewall is the accurate octagon of ring-type, ring-type polygon or ring-type quasi-circular.
5, regular bed modular high temperature gas cooled reactor as claimed in claim 1, the surface that it is characterized in that the graphite reflector cavity floor is the plane, is distributed with in the plane and the square arrangement of fuel sphere depression, boss or square net accordingly.
6, regular bed modular high temperature gas cooled reactor as claimed in claim 1 is characterized in that the graphite block reflection horizon adjacent with the reactor fuel ball is graphite nodule.
7, regular bed modular high temperature gas cooled reactor as claimed in claim 1 is characterized in that on pressure vessels top cover, has the dress dumping pit corresponding with annular reactor core.
8, a kind of fuel sphere disposal method of regular bed modular high temperature gas cooled reactor, it is characterized in that the inner region of ring-type reactor core is provided with the fuel sphere of 2～5 first kind of burn-up levels, outskirt is provided with the fuel sphere of 2～5 second kind of burn-up levels, and the center is provided with the fuel sphere of remaining the third burn-up level.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100929733A CN1296939C (en) | 2005-08-26 | 2005-08-26 | Regular bed modular high temperature gas cooled reactor and its fuel sphere disposal method |
| PCT/CN2006/001964 WO2007022688A1 (en) | 2005-08-26 | 2006-08-04 | Regular bed modular high temperature gas cooled reactor and its fuel ball disposition method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100929733A CN1296939C (en) | 2005-08-26 | 2005-08-26 | Regular bed modular high temperature gas cooled reactor and its fuel sphere disposal method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1731533A true CN1731533A (en) | 2006-02-08 |
| CN1296939C CN1296939C (en) | 2007-01-24 |
Family
ID=35963872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100929733A Expired - Fee Related CN1296939C (en) | 2005-08-26 | 2005-08-26 | Regular bed modular high temperature gas cooled reactor and its fuel sphere disposal method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1296939C (en) |
| WO (1) | WO2007022688A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871529A (en) * | 2014-03-26 | 2014-06-18 | 清华大学 | Bottom reflection layer structure of ball bed type high temperature gas cooled reactor |
| CN103971770A (en) * | 2014-01-03 | 2014-08-06 | 中国科学院上海应用物理研究所 | Loading device and loading method for pebble-bed reactorfuel spheres |
| CN108231218A (en) * | 2017-12-29 | 2018-06-29 | 安徽中科超安科技有限公司 | Passive shutdown protection system for nuclear power station and other reactors |
| CN110097989A (en) * | 2018-01-31 | 2019-08-06 | 中国辐射防护研究院 | It is a kind of to remove graphite dust pollution method for pebble bed high temperature reactor |
| CN111370146A (en) * | 2020-03-17 | 2020-07-03 | 中国核动力研究设计院 | Reactor structure suitable for spherical fuel and high-temperature coolant |
| CN112309595A (en) * | 2020-11-06 | 2021-02-02 | 西安热工研究院有限公司 | Device and method for high-temperature gas cooled reactor core subregion loading |
| CN114388158A (en) * | 2021-12-16 | 2022-04-22 | 华能核能技术研究院有限公司 | Modular high-temperature gas cooled reactor top fuel flattening model |
| CN114388151A (en) * | 2021-12-16 | 2022-04-22 | 华能核能技术研究院有限公司 | Pebble bed reactor structure |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820430B (en) * | 2019-11-18 | 2024-05-14 | 中国核工业二三建设有限公司 | Method for installing and building graphite and carbon internal components of high-temperature gas cooled reactor and installation trolley |
| CN113674880B (en) * | 2021-07-05 | 2023-11-14 | 中国核电工程有限公司 | Prismatic high-temperature gas cooled reactor lower reflecting layer, reactor core and high-temperature gas cooled reactor |
| CN115718109A (en) * | 2022-10-28 | 2023-02-28 | 西安热工研究院有限公司 | DR monitoring system for graphite nodules in ball road pipeline of HTR-PM fuel loading and unloading system |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1132261B (en) * | 1959-08-27 | 1962-06-28 | Bbc Brown Boveri & Cie | Nuclear reactor, the core of which contains a packing of fuel elements consisting of shaped bodies such as balls or the like |
| DE3114480A1 (en) * | 1981-04-10 | 1982-10-28 | Hochtemperatur-Reaktorbau GmbH, 5000 Köln | GAS COOLED HIGH TEMPERATURE REACTOR WITH FLOOR PLATE |
| CN1016472B (en) * | 1985-08-19 | 1992-04-29 | 于利奇研究中心有限公司 | Loading process for briquet stove type nuclear reactor and the corresponding briquet stove type nuclear reactor |
| CN1013717B (en) * | 1985-08-19 | 1991-08-28 | 于利奇研究中心有限公司 | Briquet stove-type intermittently running nuclear reactor |
| DE3604869A1 (en) * | 1986-02-15 | 1987-08-20 | Hochtemperatur Reaktorbau Gmbh | GAS-COOLED CORE REACTOR WITH A STATIONARY PROTECTION OF SPHERICAL OPERATING ELEMENTS |
| JPH07113887A (en) * | 1993-10-15 | 1995-05-02 | Japan Atom Energy Res Inst | Nuclear reactor using burning fuel ball and breeding fuel ball |
| WO2002001577A1 (en) * | 2000-06-29 | 2002-01-03 | Eskom | Nuclear plant |
| JP3905392B2 (en) * | 2002-01-31 | 2007-04-18 | 株式会社日立製作所 | Reactor equipment, reactor core, and operating method of reactor |
| CN1159726C (en) * | 2002-06-21 | 2004-07-28 | 清华大学 | Determining method and device for reactor core of spherical-bed high-temperature gas-cooled reactor |
| US6865245B2 (en) * | 2002-10-03 | 2005-03-08 | Massachusetts Institute Of Technology | Guide ring to control granular mixing in a pebble-bed nuclear reactor |
-
2005
- 2005-08-26 CN CNB2005100929733A patent/CN1296939C/en not_active Expired - Fee Related
-
2006
- 2006-08-04 WO PCT/CN2006/001964 patent/WO2007022688A1/en active Application Filing
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103971770A (en) * | 2014-01-03 | 2014-08-06 | 中国科学院上海应用物理研究所 | Loading device and loading method for pebble-bed reactorfuel spheres |
| CN103971770B (en) * | 2014-01-03 | 2016-07-06 | 中国科学院上海应用物理研究所 | Loading attachment and stowage for pebble bed reactor fuel sphere |
| CN103871529A (en) * | 2014-03-26 | 2014-06-18 | 清华大学 | Bottom reflection layer structure of ball bed type high temperature gas cooled reactor |
| CN103871529B (en) * | 2014-03-26 | 2016-08-17 | 清华大学 | A kind of end reflection layer structure of high temperature pebble-bed gas-cooled reactor |
| CN108231218A (en) * | 2017-12-29 | 2018-06-29 | 安徽中科超安科技有限公司 | Passive shutdown protection system for nuclear power station and other reactors |
| CN110097989A (en) * | 2018-01-31 | 2019-08-06 | 中国辐射防护研究院 | It is a kind of to remove graphite dust pollution method for pebble bed high temperature reactor |
| CN110097989B (en) * | 2018-01-31 | 2022-11-18 | 中国辐射防护研究院 | Graphite dust pollution removing method for pebble-bed high-temperature gas cooled reactor |
| CN111370146A (en) * | 2020-03-17 | 2020-07-03 | 中国核动力研究设计院 | Reactor structure suitable for spherical fuel and high-temperature coolant |
| CN111370146B (en) * | 2020-03-17 | 2021-11-23 | 中国核动力研究设计院 | Reactor structure suitable for spherical fuel and high-temperature coolant |
| CN112309595A (en) * | 2020-11-06 | 2021-02-02 | 西安热工研究院有限公司 | Device and method for high-temperature gas cooled reactor core subregion loading |
| CN114388158A (en) * | 2021-12-16 | 2022-04-22 | 华能核能技术研究院有限公司 | Modular high-temperature gas cooled reactor top fuel flattening model |
| CN114388151A (en) * | 2021-12-16 | 2022-04-22 | 华能核能技术研究院有限公司 | Pebble bed reactor structure |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007022688A1 (en) | 2007-03-01 |
| CN1296939C (en) | 2007-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1296939C (en) | Regular bed modular high temperature gas cooled reactor and its fuel sphere disposal method | |
| CN1182540C (en) | Seed-blanket reactors | |
| CN1174432C (en) | Nuclear reactor core and method for running nuclear reactor | |
| RU2506656C2 (en) | Mixed oxide fuel assembly | |
| JP2016529521A (en) | Reactive control method and telescope type control rod of pebble bed high temperature gas cooling furnace | |
| WO2009097037A2 (en) | High power density liquid-cooled pebble-channel nuclear reactor | |
| CN111627571B (en) | Liquid fuel molten salt reactor using graphite nodules as moderator and graphite nodule replacement method | |
| US20120288052A1 (en) | Nuclear reactor | |
| RU2012137378A (en) | MODULAR REACTOR CONVERTING WASTE FISSIONS | |
| WO2004032150A1 (en) | Guide ring to control granular mixing in a pebble-bed nuclear reactor | |
| CN101128885B (en) | Fuel bundle for pressurized-water reactor and method of designing fuel bundle | |
| CN1737948B (en) | Use of isotopically enriched nitride in actinide fuel in nuclear reactors | |
| CN110867261B (en) | Multi-type pellet mixed loading metal cooling reactor and management method | |
| WO2022193905A1 (en) | Mixing chamber structure for prismatic high-temperature gas-cooled reactor, and prismatic high-temperature gas-cooled reactor structure | |
| CN114446496A (en) | Ultra-high flux reactor core based on annular fuel element | |
| US20100166133A1 (en) | Use of isotopically enriched nitrogen in actinide fuel in nuclear reactors | |
| CN111276265B (en) | Rod type fuel element using uranium-yttrium hydride fuel | |
| CN111768881A (en) | Liquid passive reactor control rod and working method thereof | |
| CN106128516A (en) | A kind of thorium base fuel assembly and small-sized presurized water reactor | |
| US9437335B2 (en) | Designed porosity materials in nuclear reactor components | |
| JP2003222693A (en) | Reactor facility, reactor core, and reactor operation method | |
| CN112599259B (en) | Fusion-fission hybrid reactor transmutation fuel assembly | |
| US4695423A (en) | Method for loading, operating, and unloading a ball-bed nuclear reactor | |
| Venter et al. | PBMR reactor design and development | |
| CN112216408A (en) | Fuel element, high-temperature gas-cooled reactor and high-temperature gas-cooled reactor system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070124 Termination date: 20170826 |