CN106448751A - Metal reactor internal core vessel supporting structure of high-temperature gas cooled reactor and mounting method thereof - Google Patents
Metal reactor internal core vessel supporting structure of high-temperature gas cooled reactor and mounting method thereof Download PDFInfo
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- CN106448751A CN106448751A CN201610544222.9A CN201610544222A CN106448751A CN 106448751 A CN106448751 A CN 106448751A CN 201610544222 A CN201610544222 A CN 201610544222A CN 106448751 A CN106448751 A CN 106448751A
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- ring
- core shell
- base plate
- shaped bearing
- bearing platform
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C5/00—Moderator or core structure; Selection of materials for use as moderator
- G21C5/02—Details
- G21C5/10—Means for supporting the complete structure
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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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- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention belongs to the technical field of reactor internals of nuclear reactors and in particular relates to a metal reactor internal core vessel supporting structure of a high-temperature gas cooled reactor and a mounting method thereof. According to the technical scheme of the invention, the total weight (calculated by 800T) of the metal reactor internals, ceramic reactor internals and graphite nodules thereof is centralized on a circular supporting platform, and the newly designed circular supporting platform has the area of 9.684m<2> and the pressure of about 82.6T/m<2>, which are far lower than those of the original design. Six key grooves are formed in the supporting platform and a core vessel bottom plate, so that peripheral displacement of the core vessel can be effectively limited; two anti-trip bolt holes are respectively formed in two ends of each key groove, so that displacement of the core vessel in the upper and lower directions can be effectively prevented. Therefore, even if an earthquake occurs, the reactor internals do not have large play.
Description
Technical field
The invention belongs to nuclear reactor in-pile component technical field is and in particular to a kind of HTGR metal in-pile component
Heap core shell supporting structure and installation method.
Background technology
HTGR metal in-pile component reactor core shell supporting structure is welded on inside pressure vessel lower shell, is supporting gold
Belong to the vitals of in-pile component.Existing design is provided with 15 supporting platforms inside pressure vessel lower shell, each supporting
15 groups of ball assemblies are provided with platform, ball assembly is made up of two groups of cylindrical roller and upper and lower cover plates altogether, two groups cylindrical
Ball is clipped in the middle by upper and lower cover plates, respectively has one group of tooth bar to be fixed on ball in ball both sides upper-lower position, with upper and lower cover plates
The tooth bar of both sides is meshed.It is fixed in 15 supporting platforms in pressure vessel by the M36 fixing bolt of lower cover, thereon
Cover plate is fixed on heap core shell base plate by the fixing bolt of M36.
But, existing design still suffers from problems with urgent need to resolve：(1) stress concentration.In metal in-pile component, ceramic stack
, in more than 800T, its stress all concentrates in 15 groups of ball assemblies for component and its graphite nodule total weight.(2) shockproof properties are relatively
Difference.The rotation to prevent circumference for the positive stop lug boss of only upper feather key and cylinder bottom between heap core shell and pressure vessel, for
The displacement of above-below direction does not then have effective measures.Once there is the higher earthquake of earthquake magnitude, then in-pile component has the risk toppled.
(3) difficulty of construction is big, and heap core shell Level-adjusting is difficult.During site operation, the preliminary adjustment time of heap core shell levelness reaches 35
My god, part index number is not up to design requirement, subsequently remains a need for being adjusted by processing the modes such as backing plate, the overall duration is estimated about
For 50 days about.(4) manufacture difficulty is big.The requirement on machining accuracy of ball assembly is higher, and the production cycle is longer.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of HTGR metal in-pile component reactor core shell supporting structure
And installation method, thus solve that the at present stress concentration that design exists, shockproof properties are poor, constructional difficulties the problems such as.
In order to realize this purpose, the present invention adopts the technical scheme that：
A kind of HTGR metal in-pile component reactor core shell supporting structure, including ring-shaped bearing platform and heap core shell bottom
Plate；
(1) ring-shaped bearing platform
Apart from pressure vessel upper surface 119464mm, external diameter is 5700mm to ring-shaped bearing platform, and internal diameter is 4490mm, thickness
For 80mm, it is welded as a whole with pressure vessel lower shell at the outer shroud of ring-shaped bearing platform；
It is uniformly arranged 36 platform supports floors in ring-shaped bearing platform lower, platform supports floor is tied for right-angled trapezium
Structure, its thickness is 50mm；The a length of 605mm of waist that right-angle side is located, is welded together with ring-shaped bearing platform lower surface；Its long side
Go to the bottom length be 600mm, be welded on pressure vessel lower shell inwall, its minor face go to the bottom length be 150mm, perpendicular to ring
Shape supporting platform lower surface；
At the middle part of platform supports floor away from ring-shaped bearing platform lower surface 200mm, open at pressure vessel barrel 250mm
If the stress relief hole of a diameter of 100mm；
In ring-shaped bearing platform upper surface, 6 equally distributed anti-rotations are set at pressure vessel lower shell inwall 290mm
Keyway；Anti- rotation keyway is long annular flat keyway, and its depth is 30mm, and width is 80mm, and length is 160mm, and two ends are one respectively
Individual radius is the semicircle of 40mm, and centre is the square that the length of side is 80mm；
In each anti-rotation keyway, 2 anti-jump bolts hole are symmetrically set along the two ends of ring-shaped bearing platform upper surface, prevent
Jump the centre distance anti-rotation key slot center line 261mm of bolt hole, apart from pressure vessel center 2500mm；Each bolt hole is long
Loop configuration, its two ends is the semicircle that radius is 33mm respectively, and centre is the rectangular configuration of 24mm × 33mm；
(2) heap core shell base plate
In the heap core shell base plate lower surface at reactor core shell cylinder inboard wall 160mm, 6 equally distributed bottoms are set along anchor ring
Plate anti-rotation keyway；Each base plate anti-rotation keyway is long annular flat keyway arrangements, and it is highly 30mm, and length is 160mm, and width is
80mm, two ends are the semicircle that a radius is 40mm respectively, and centre is the square that the length of side is 80mm；
In each base plate anti-rotation keyway, the anti-jump bolt of 2 base plates is symmetrically set along the two ends of heap core shell base plate lower surface
Hole, the centre distance base plate anti-rotation key slot center line 261mm of the anti-jump bolt hole of base plate, apart from heap core shell center 2500mm；Each
The anti-jump bolt hole of base plate includes upper and lower two parts, and top is radius is 50mm, and depth is the cylindrical bolt hole of 40mm, and bottom is
Radius is 33mm, and depth is the cylindrical bolt hole of 40mm.
Further, a kind of HTGR metal in-pile component reactor core shell supporting structure as above, heap core shell bottom
The outer shroud machined surface that plate is contacted with ring flat-plate supporting platform is polished surface, and flatness is 0.1mm.
Further, a kind of HTGR metal in-pile component reactor core shell supporting structure as above, ring flat-plate supports
The flatness of platform upper surface is 0.1mm.
A kind of installation method of HTGR metal in-pile component reactor core shell supporting structure as above, including as follows
Step：
(1) the axiality index of the levelness of high temperature air-cooled pile pressure container, pressure vessel hot gas ozzle is adjusted to set
Meter requires；
(2) it is and then by length 158mm, highly for 59mm, width is that the anti-rotation key of 78mm puts into ring-shaped bearing platform
Anti- rotation key slot center position；
(3) hang in heap core shell, be placed on ring-shaped bearing platform, control in base plate anti-rotation keyway alignment procedures (2)
The anti-rotation key put into；
(4) according to design requirement, adjustment heap core shell circumferential position degree, heap core shell hot gas conduit ozzle and pressure vessel hot gas
The axiality of catheter nozzle；
(5) the anti-jump bolt of 12 M60 × 220 is penetrated from the anti-jump bolt hole of base plate of heap core shell base plate, by lock pad
Piece penetrates anti-jump screw rod, then nut is screwed on, and stops tightening away from ring-shaped bearing platform lower surface 1mm, lock washer is locked
Nut, installation terminates.
The having the beneficial effects that of technical solution of the present invention：
(1) solve the problems, such as stress concentration.Metal in-pile component, ceramic in-pile component and its graphite nodule total weight
(being calculated with 800T) concentrates on ring-shaped bearing platform, and the area of newly-designed ring-shaped bearing platform is 9.684, and pressure is about
82.6T/, far below former design.
(2) anti-seismic performance is good.And it is provided with 6 keyways on heap core shell base plate in supporting platform, can effectively place restrictions on heap
The displacement of core shell circumference；It is each provided with an anti-jump bolt hole at keyway two ends, can effectively prevent heap core shell above-below direction
Displacement.So, even if earthquake occurs, in-pile component is unlikely to big play.
(3) construct simply.After each index such as pressure vessel levelness is adjusted in place, process ring-shaped bearing with specific purpose tool
Heap core shell, so as to precision reaches 0.1mm, is then lifted up into pressure vessel by face, is directly seated on annular bearing surface.Heap core shell is not
With adjustment, directly carry out next step operation.
(4) it is simple to manufacture.Eliminate the ball assembly processing in former design, the work such as heap core shell base plate outer shroud floor welding
Make, as long as ensureing that heap core shell base plate outer shroud machined surface (face contacting with supporting platform) planarity requirements reach 0.1mm.
Brief description
Fig. 1 is ring-shaped bearing platform structure schematic diagram；
Fig. 2 is ring-shaped bearing platform structure A-A face sectional view；
Fig. 3 is ring-shaped bearing platform structure opposite side A-A face sectional view；
Fig. 4 is ring-shaped bearing platform structure B face sectional view；
Fig. 5 is ring-shaped bearing platform structure C face sectional view；
Fig. 6 is heap core shell base arrangement schematic diagram；
Fig. 7 is heap core shell base arrangement D face sectional view；
Fig. 8 is ring-shaped bearing platform structure E face sectional view；
Fig. 9 is ring-shaped bearing platform structure F face sectional view.
In figure：1- ring-shaped bearing platform, 2- platform supports floor, 3- stress relief hole, 4- anti-rotation keyway, the anti-jump bolt of 5-
Hole, 6- pressure vessel lower shell, 7- heap core shell base plate, 8- base plate anti-rotation keyway, the anti-jump bolt hole of 9- base plate.
Specific embodiment
With specific embodiment, technical solution of the present invention is described in detail below in conjunction with the accompanying drawings.
A kind of HTGR metal in-pile component reactor core shell supporting structure, including ring-shaped bearing platform and heap core shell bottom
Plate；
(1) ring-shaped bearing platform
As shown in Fig. 1～5, apart from pressure vessel upper surface 119464mm, external diameter is 5700mm to ring-shaped bearing platform, internal diameter
For 4490mm, thickness is 80mm, is welded as a whole with pressure vessel lower shell at the outer shroud of ring-shaped bearing platform；
It is uniformly arranged 36 platform supports floors in ring-shaped bearing platform lower, platform supports floor is tied for right-angled trapezium
Structure, its thickness is 50mm；The a length of 605mm of waist that right-angle side is located, is welded together with ring-shaped bearing platform lower surface；Its long side
Go to the bottom length be 600mm, be welded on pressure vessel lower shell inwall, its minor face go to the bottom length be 150mm, perpendicular to ring
Shape supporting platform lower surface；
At the middle part of platform supports floor away from ring-shaped bearing platform lower surface 200mm, open at pressure vessel barrel 250mm
If the stress relief hole of a diameter of 100mm；
In ring-shaped bearing platform upper surface, 6 equally distributed anti-rotations are set at pressure vessel lower shell inwall 290mm
Keyway；Anti- rotation keyway is long annular flat keyway, and its depth is 30mm, and width is 80mm, and length is 160mm, and two ends are one respectively
Individual radius is the semicircle of 40mm, and centre is the square that the length of side is 80mm；
In each anti-rotation keyway, 2 anti-jump bolts hole are symmetrically set along the two ends of ring-shaped bearing platform upper surface, prevent
Jump the centre distance anti-rotation key slot center line 261mm of bolt hole, apart from pressure vessel center 2500mm；Each bolt hole is long
Loop configuration, its two ends is the semicircle that radius is 33mm respectively, and centre is the rectangular configuration of 24mm × 33mm；
(2) heap core shell base plate
As shown in Fig. 6～9, arrange 6 in the heap core shell base plate lower surface at reactor core shell cylinder inboard wall 160mm along anchor ring
The anti-rotation keyway of equally distributed base plate；Each base plate anti-rotation keyway is long annular flat keyway arrangements, and it is highly 30mm, and length is
160mm, width is 80mm, and two ends are the semicircle that a radius is 40mm respectively, and centre is the square that the length of side is 80mm；
In each base plate anti-rotation keyway, the anti-jump bolt of 2 base plates is symmetrically set along the two ends of heap core shell base plate lower surface
Hole, the centre distance base plate anti-rotation key slot center line 261mm of the anti-jump bolt hole of base plate, apart from heap core shell center 2500mm；Each
The anti-jump bolt hole of base plate includes upper and lower two parts, and top is radius is 50mm, and depth is the cylindrical bolt hole of 40mm, and bottom is
Radius is 33mm, and depth is the cylindrical bolt hole of 40mm.
In the present embodiment, the outer shroud machined surface that heap core shell base plate is contacted with ring flat-plate supporting platform is polished surface, plane
Spend for 0.1mm.The flatness of ring flat-plate supporting platform upper surface is 0.1mm.
A kind of installation method of HTGR metal in-pile component reactor core shell supporting structure, comprises the steps：
(1) the axiality index of the levelness of high temperature air-cooled pile pressure container, pressure vessel hot gas ozzle is adjusted to set
Meter requires；
(2) it is and then by length 158mm, highly for 59mm, width is that the anti-rotation key of 78mm puts into ring-shaped bearing platform
Anti- rotation key slot center position；
(3) hang in heap core shell, be placed on ring-shaped bearing platform, control in base plate anti-rotation keyway alignment procedures (2)
The anti-rotation key put into；
(4) according to design requirement, adjustment heap core shell circumferential position degree, heap core shell hot gas conduit ozzle and pressure vessel hot gas
The axiality of catheter nozzle；
(5) the anti-jump bolt of 12 M60 × 220 is penetrated from the anti-jump bolt hole of base plate of heap core shell base plate, by lock pad
Piece penetrates anti-jump screw rod, then nut is screwed on, and stops tightening away from ring-shaped bearing platform lower surface 1mm, lock washer is locked
Nut, installation terminates.
Claims (4)
1. a kind of HTGR metal in-pile component reactor core shell supporting structure it is characterised in that：Including ring-shaped bearing platform and
Heap core shell base plate；
(1) ring-shaped bearing platform
Apart from pressure vessel upper surface 119464mm, external diameter is 5700mm to ring-shaped bearing platform, and internal diameter is 4490mm, and thickness is
80mm, is welded as a whole with pressure vessel lower shell at the outer shroud of ring-shaped bearing platform；
It is uniformly arranged 36 platform supports floors in ring-shaped bearing platform lower, platform supports floor is ladder structure of right angle, its
Thickness is 50mm；The a length of 605mm of waist that right-angle side is located, is welded together with ring-shaped bearing platform lower surface；Under its long side
Bottom length is 600mm, is welded on pressure vessel lower shell inwall, and the length of going to the bottom of its minor face is 150mm, perpendicular to annular
Peaceful lower surface；
At the middle part of platform supports floor away from ring-shaped bearing platform lower surface 200mm, open up straight at pressure vessel barrel 250mm
Footpath is the stress relief hole of 100mm；
In ring-shaped bearing platform upper surface, 6 equally distributed anti-rotation keyways are set at pressure vessel lower shell inwall 290mm；
Anti- rotation keyway is long annular flat keyway, and its depth is 30mm, and width is 80mm, and length is 160mm, and two ends are a radius respectively
Semicircle for 40mm, centre is the square that the length of side is 80mm；
In each anti-rotation keyway, 2 anti-jump bolts hole, anti-jump spiral shell are symmetrically set along the two ends of ring-shaped bearing platform upper surface
The centre distance anti-rotation key slot center line 261mm of keyhole, apart from pressure vessel center 2500mm；Each bolt hole is long annular
Structure, its two ends is the semicircle that radius is 33mm respectively, and centre is the rectangular configuration of 24mm × 33mm；
(2) heap core shell base plate
Arrange 6 equally distributed base plates in the heap core shell base plate lower surface at reactor core shell cylinder inboard wall 160mm along anchor ring to prevent
Rotation keyway；Each base plate anti-rotation keyway is long annular flat keyway arrangements, and it is highly 30mm, and length is 160mm, and width is
80mm, two ends are the semicircle that a radius is 40mm respectively, and centre is the square that the length of side is 80mm；
In each base plate anti-rotation keyway, the anti-jump bolt hole of 2 base plates is symmetrically set along the two ends of heap core shell base plate lower surface,
The centre distance base plate anti-rotation key slot center line 261mm of the anti-jump bolt hole of base plate, apart from heap core shell center 2500mm；Each base plate
Anti-jump bolt hole includes upper and lower two parts, and top is radius is 50mm, and depth is the cylindrical bolt hole of 40mm, and bottom is radius
For 33mm, depth is the cylindrical bolt hole of 40mm.
2. as claimed in claim 1 a kind of HTGR metal in-pile component reactor core shell supporting structure it is characterised in that：Heap
The outer shroud machined surface that core shell base plate is contacted with ring flat-plate supporting platform is polished surface, and flatness is 0.1mm.
3. as claimed in claim 1 a kind of HTGR metal in-pile component reactor core shell supporting structure it is characterised in that：Ring
The flatness of plate supporting platform upper surface is 0.1mm.
4. as a kind of installation of HTGR metal in-pile component reactor core shell supporting structure of any one of claims 1 to 3
Method is it is characterised in that comprise the steps：
(1) the axiality index of the levelness of high temperature air-cooled pile pressure container, pressure vessel hot gas ozzle being adjusted to design will
Ask；
(2) it is and then by length 158mm, highly for 59mm, the anti-rotation key for 78mm for the width puts into the anti-rotation of ring-shaped bearing platform
Key slot center position；
(3) hang in heap core shell, be placed on ring-shaped bearing platform, control in base plate anti-rotation keyway alignment procedures (2) and put into
Anti- rotation key；
(4) according to design requirement, adjustment heap core shell circumferential position degree, heap core shell hot gas conduit ozzle and pressure vessel hot gas conduit
The axiality of ozzle；
(5) the anti-jump bolt of 12 M60 × 220 is penetrated from the anti-jump bolt hole of base plate of heap core shell base plate, lock washer is worn
Enter anti-jump screw rod, then nut is screwed on, stop tightening away from ring-shaped bearing platform lower surface 1mm, by lock washer locking nut,
Installation terminates.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107818830A (en) * | 2017-09-27 | 2018-03-20 | 中国核工业二三建设有限公司 | The hanging method of HTGR reactor core shell |
| CN108974372A (en) * | 2018-10-10 | 2018-12-11 | 深圳市道通智能航空技术有限公司 | Fly control module installation structure, fly control component and unmanned plane |
| CN109094798A (en) * | 2018-10-10 | 2018-12-28 | 深圳市道通智能航空技术有限公司 | A kind of unmanned plane and its winged control component |
| CN109411101A (en) * | 2018-11-30 | 2019-03-01 | 上海核工程研究设计院有限公司 | A kind of fixed structure of in-pile component guide cylinder |
| CN111341467A (en) * | 2020-03-17 | 2020-06-26 | 中国核动力研究设计院 | Metal reactor internal member suitable for spherical fuel and high-temperature coolant |
| CN112489839A (en) * | 2020-11-27 | 2021-03-12 | 华能山东石岛湾核电有限公司 | Method for adjusting levelness of reactor core shell bottom plate of high-temperature gas cooled reactor metal reactor internals |
| CN112820430A (en) * | 2019-11-18 | 2021-05-18 | 中国核工业二三建设有限公司 | Method for installing and constructing high-temperature gas cooled reactor graphite and carbon reactor internal member and installing trolley |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107818830A (en) * | 2017-09-27 | 2018-03-20 | 中国核工业二三建设有限公司 | The hanging method of HTGR reactor core shell |
| CN107818830B (en) * | 2017-09-27 | 2020-09-15 | 中国核工业二三建设有限公司 | Hoisting method of reactor core shell of high-temperature gas cooled reactor |
| CN108974372A (en) * | 2018-10-10 | 2018-12-11 | 深圳市道通智能航空技术有限公司 | Fly control module installation structure, fly control component and unmanned plane |
| CN109094798A (en) * | 2018-10-10 | 2018-12-28 | 深圳市道通智能航空技术有限公司 | A kind of unmanned plane and its winged control component |
| CN109411101A (en) * | 2018-11-30 | 2019-03-01 | 上海核工程研究设计院有限公司 | A kind of fixed structure of in-pile component guide cylinder |
| CN112820430A (en) * | 2019-11-18 | 2021-05-18 | 中国核工业二三建设有限公司 | Method for installing and constructing high-temperature gas cooled reactor graphite and carbon reactor internal member and installing trolley |
| 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 |
| CN111341467A (en) * | 2020-03-17 | 2020-06-26 | 中国核动力研究设计院 | Metal reactor internal member suitable for spherical fuel and high-temperature coolant |
| CN111341467B (en) * | 2020-03-17 | 2021-10-22 | 中国核动力研究设计院 | Metal reactor internal member suitable for spherical fuel and high-temperature coolant |
| CN112489839A (en) * | 2020-11-27 | 2021-03-12 | 华能山东石岛湾核电有限公司 | Method for adjusting levelness of reactor core shell bottom plate of high-temperature gas cooled reactor metal reactor internals |
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