CN106448751B - A kind of HTGR metal in-pile component reactor core shell supporting structure and installation method - Google Patents
A kind of HTGR metal in-pile component reactor core shell supporting structure and installation method Download PDFInfo
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- CN106448751B CN106448751B CN201610544222.9A CN201610544222A CN106448751B CN 106448751 B CN106448751 B CN 106448751B CN 201610544222 A CN201610544222 A CN 201610544222A CN 106448751 B CN106448751 B CN 106448751B
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- core shell
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- bottom 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
Abstract
The invention belongs to nuclear reactor in-pile component technical field, and in particular to a kind of HTGR metal in-pile component reactor core shell supporting structure and installation method.Pass through technical solution of the present invention, metal in-pile component, ceramic in-pile component and its graphite nodule total weight (being calculated with 800T) are concentrated on ring-shaped bearing platform, the area of newly-designed ring-shaped bearing platform is 9.684 ㎡, and pressure is about 82.6T/ ㎡, is designed far below original.In supporting platform and 6 keyways are provided with heap core shell bottom plate, can effectively place restrictions on the circumferential displacement of heap core shell；An anti-jump bolt hole is each provided with keyway both ends, can effectively prevent the displacement of heap core shell above-below direction.In this way, even if earthquake occurs, in-pile component is unlikely to that big play occurs.
Description
Technical field
The invention belongs to nuclear reactor in-pile component technical field, 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 important component 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 altogether, ball assembly is made up of two groups of cylindrical rollers and upper and lower cover plates, two groups of cylinders
Ball is clipped in the middle by upper and lower cover plates, and in ball both sides, upper-lower position respectively has one group of rack to be fixed on ball, with upper and lower cover plates
The rack of both sides is meshed.In 15 supporting platforms being fixed on by the M36 fixing bolts of lower cover in pressure vessel, thereon
Cover plate is fixed on heap core shell bottom plate by M36 fixing bolt.
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 is all concentrated in 15 groups of ball assemblies for component and its graphite nodule total weight.(2) shockproof properties compared with
Difference.Only have upper feather key and the positive stop lug boss of cylinder bottom to prevent circumferential rotation between heap core shell and pressure vessel, for
The displacement of above-below direction does not have effective measures then.Once the higher earthquake of earthquake magnitude occurs, then in-pile component has the risk toppled.
(3) difficulty of construction is big, and heap core shell Level-adjusting is difficult.The preliminary adjustment time of heap core shell levelness reaches 35 during site operation
My god, part index number is not up to design requirement, subsequently stills need to be adjusted by processing the modes such as backing plate, and overall duration estimation is about
For 50 days or so.(4) manufacture difficulty is big.The requirement on machining accuracy of ball assembly is higher, and the production cycle is longer.
The 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, so as to solve the problems such as poor stress concentration, shockproof properties existing for design at present, constructional difficulties.
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
Ring-shaped bearing platform is apart from pressure vessel upper surface 119464mm, external diameter 5700mm, internal diameter 4490mm, thickness
For 80mm, it is welded as a whole at the outer shroud of ring-shaped bearing platform with pressure vessel lower shell；
36 platform supports floors are uniformly arranged in ring-shaped bearing platform lower, platform supports floor is right-angled trapezium knot
Structure, its thickness are 50mm；The a length of 605mm of waist where right-angle side, welds together with ring-shaped bearing platform lower surface；Its long side
Bottom length be 600mm, be welded on pressure vessel lower shell inwall, the bottom length of its short side is 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, away from being opened at pressure vessel barrel 250mm
If a diameter of 100mm stress relief hole；
In ring-shaped bearing platform upper surface away from 6 equally distributed anti-rotations of setting at pressure vessel lower shell inwall 290mm
Keyway；Anti- rotation keyway is long annular flat keyway, and its depth is 30mm, width 80mm, length 160mm, and both ends are one respectively
Individual radius is 40mm semicircle, and centre is the square that the length of side is 80mm；
2 anti-jump bolts hole are symmetrically set at both ends of each anti-rotation keyway along ring-shaped bearing platform upper surface, prevented
The anti-rotation key slot center line 261mm of centre distance of bolt hole is jumped, apart from pressure vessel center 2500mm；Each bolt hole is long
Loop configuration, its both ends are the semicircle that radius is 33mm respectively, and centre is 24mm × 33mm rectangular configuration；
(2) heap core shell bottom plate
Heap core shell bottom plate lower surface at away from reactor core shell cylinder inboard wall 160mm sets 6 equally distributed bottoms along anchor ring
The anti-rotation keyway of plate；Each anti-rotation keyway of bottom plate is long annular flat keyway arrangements, and its height is 30mm, length 160mm, and width is
80mm, both ends are the semicircle that a radius is 40mm respectively, and centre is the square that the length of side is 80mm；
At both ends of the anti-rotation keyway of each bottom plate along heap core shell bottom plate lower surface, 2 anti-jump bolts of bottom plate are symmetrically set
Hole, the anti-rotation key slot center line 261mm of centre distance bottom plate of the anti-jump bolt hole of bottom plate, apart from heap core shell center 2500mm；Each
The anti-jump bolt hole of bottom plate includes upper and lower two parts, and top is that radius is 50mm, and depth is 40mm cylindrical bolt hole, and bottom is
Radius is 33mm, and depth is 40mm cylindrical bolt hole.
Further, a kind of HTGR metal in-pile component reactor core shell supporting structure as described above, heap core shell bottom
The outer shroud machined surface that plate contacts with ring flat-plate supporting platform is polished surface, flatness 0.1mm.
Further, a kind of HTGR metal in-pile component reactor core shell supporting structure as described above, ring flat-plate supporting
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 described above, including it is 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, is highly 59mm, width is that 78mm anti-rotation key is put into ring-shaped bearing platform
Anti- rotation key slot center position；
(3) heap core shell is hung in, is placed on ring-shaped bearing platform, in the anti-rotation keyway alignment procedures (2) of control bottom plate
The anti-rotation key being 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 bottom plate of heap core shell bottom plate, by lock pad
Piece penetrates anti-jump screw rod, then screws on nut, stops tightening away from ring-shaped bearing platform lower surface 1mm, lock washer is locked
Nut, installation terminate.
The beneficial effect of technical solution of the present invention is：
(1) solves the problems, such as stress concentration.Metal in-pile component, ceramic in-pile component and its graphite nodule total weight
(being calculated with 800T) is concentrated on ring-shaped bearing platform, and the area of newly-designed ring-shaped bearing platform is 9.684 ㎡, and pressure is about
82.6T/ ㎡, designed far below original.
(2) anti-seismic performance is good.In supporting platform and 6 keyways are provided with heap core shell bottom plate, can effectively place restrictions on heap
The circumferential displacement of core shell；An anti-jump bolt hole is each provided with keyway both ends, can effectively prevent heap core shell above-below direction
Displacement.In this way, even if earthquake occurs, in-pile component is unlikely to that big play occurs.
(3) construction is simple.After each index such as pressure vessel levelness is adjusted in place, ring-shaped bearing is processed with specific purpose tool
Face, its precision is reached 0.1mm, heap core shell is then lifted up into pressure vessel, is directly seated on annular bearing surface.Heap core shell is not
With adjustment, the next step is directly carried out.
(4) it is simple to manufacture.Eliminate the work such as ball assembly processing, heap core shell bottom plate outer shroud floor welding in former design
Make, as long as ensureing that heap core shell bottom plate outer shroud machined surface (face contacted with supporting platform) planarity requirements reach 0.1mm.
Brief description of the drawings
Fig. 1 is ring-shaped bearing platform structure schematic diagram；
Fig. 2 is ring-shaped bearing platform structure A-A faces sectional view；
Fig. 3 is ring-shaped bearing platform structure opposite side A-A faces sectional view；
Fig. 4 is ring-shaped bearing platform structure B faces sectional view；
Fig. 5 is ring-shaped bearing platform structure C faces sectional view；
Fig. 6 is heap core shell base arrangement schematic diagram；
Fig. 7 is heap core shell base arrangement D faces sectional view；
Fig. 8 is ring-shaped bearing platform structure E faces sectional view；
Fig. 9 is ring-shaped bearing platform structure F faces sectional view.
In figure：The anti-rotation keyway of 1- ring-shaped bearings platform, 2- platform supports floor, 3- stress relief holes, 4-, the anti-jump bolts of 5-
Hole, 6- pressure vessels lower shell, 7- heap core shells bottom plate, the anti-rotation keyway of 8- bottom plates, the anti-jump bolt hole of 9- bottom plates.
Embodiment
Technical solution of the present invention is described in detail with specific embodiment 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, ring-shaped bearing platform is apart from pressure vessel upper surface 119464mm, external diameter 5700mm, internal diameter
For 4490mm, thickness 80mm, it is welded as a whole at the outer shroud of ring-shaped bearing platform with pressure vessel lower shell；
36 platform supports floors are uniformly arranged in ring-shaped bearing platform lower, platform supports floor is right-angled trapezium knot
Structure, its thickness are 50mm；The a length of 605mm of waist where right-angle side, welds together with ring-shaped bearing platform lower surface；Its long side
Bottom length be 600mm, be welded on pressure vessel lower shell inwall, the bottom length of its short side is 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, away from being opened at pressure vessel barrel 250mm
If a diameter of 100mm stress relief hole；
In ring-shaped bearing platform upper surface away from 6 equally distributed anti-rotations of setting at pressure vessel lower shell inwall 290mm
Keyway；Anti- rotation keyway is long annular flat keyway, and its depth is 30mm, width 80mm, length 160mm, and both ends are one respectively
Individual radius is 40mm semicircle, and centre is the square that the length of side is 80mm；
2 anti-jump bolts hole are symmetrically set at both ends of each anti-rotation keyway along ring-shaped bearing platform upper surface, prevented
The anti-rotation key slot center line 261mm of centre distance of bolt hole is jumped, apart from pressure vessel center 2500mm；Each bolt hole is long
Loop configuration, its both ends are the semicircle that radius is 33mm respectively, and centre is 24mm × 33mm rectangular configuration；
(2) heap core shell bottom plate
As shown in Fig. 6~9, the heap core shell bottom plate lower surface at away from reactor core shell cylinder inboard wall 160mm sets 6 along anchor ring
The equally distributed anti-rotation keyway of bottom plate；Each anti-rotation keyway of bottom plate is long annular flat keyway arrangements, and its height is 30mm, and length is
160mm, width 80mm, both ends are the semicircle that a radius is 40mm respectively, and centre is the square that the length of side is 80mm；
At both ends of the anti-rotation keyway of each bottom plate along heap core shell bottom plate lower surface, 2 anti-jump bolts of bottom plate are symmetrically set
Hole, the anti-rotation key slot center line 261mm of centre distance bottom plate of the anti-jump bolt hole of bottom plate, apart from heap core shell center 2500mm；Each
The anti-jump bolt hole of bottom plate includes upper and lower two parts, and top is that radius is 50mm, and depth is 40mm cylindrical bolt hole, and bottom is
Radius is 33mm, and depth is 40mm cylindrical bolt hole.
In the present embodiment, the outer shroud machined surface that heap core shell bottom plate contacts 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 following 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, is highly 59mm, width is that 78mm anti-rotation key is put into ring-shaped bearing platform
Anti- rotation key slot center position；
(3) heap core shell is hung in, is placed on ring-shaped bearing platform, in the anti-rotation keyway alignment procedures (2) of control bottom plate
The anti-rotation key being 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 bottom plate of heap core shell bottom plate, by lock pad
Piece penetrates anti-jump screw rod, then screws on nut, stops tightening away from ring-shaped bearing platform lower surface 1mm, lock washer is locked
Nut, installation terminate.
Claims (1)
- A kind of 1. installation method of HTGR metal in-pile component reactor core shell supporting structure, it is characterised in that:HTGR metal in-pile component reactor core shell supporting structure includes ring-shaped bearing platform and pile core shell bottom plate；(1) ring-shaped bearing platformRing-shaped bearing platform is apart from pressure vessel upper surface 119464mm, external diameter 5700mm, internal diameter 4490mm, thickness 80mm, it is welded as a whole at the outer shroud of ring-shaped bearing platform with pressure vessel lower shell；36 platform supports floors are uniformly arranged 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 where right-angle side, welds 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 bottom length of its short side is 150mm, is propped up perpendicular to annular Peaceful lower surface；It is straight away from being opened up at pressure vessel barrel 250mm at the middle part of platform supports floor away from ring-shaped bearing platform lower surface 200mm Footpath is 100mm stress relief hole；In ring-shaped bearing platform upper surface away from 6 equally distributed anti-rotation keyways of setting at pressure vessel lower shell inwall 290mm； Anti- rotation keyway is long annular flat keyway, and its depth is 30mm, width 80mm, length 160mm, and both ends are a radius respectively For 40mm semicircle, centre is the square that the length of side is 80mm；At both ends of each anti-rotation keyway along ring-shaped bearing platform upper surface, 2 anti-jump bolts hole, anti-jump spiral shell are symmetrically set The anti-rotation key slot center line 261mm of centre distance of keyhole, apart from pressure vessel center 2500mm；Each bolt hole is long annular Structure, its both ends are the semicircle that radius is 33mm respectively, and centre is 24mm × 33mm rectangular configuration；(2) pile core shell bottom platePile core shell bottom plate lower surface at away from pile core shell cylinder inboard wall 160mm sets 6 equally distributed bottom plates to prevent along anchor ring Revolve keyway；Each anti-rotation keyway of bottom plate is long annular flat keyway arrangements, and its height is 30mm, length 160mm, and width is 80mm, both ends are the semicircle that a radius is 40mm respectively, and centre is the square that the length of side is 80mm；At both ends of the anti-rotation keyway of each bottom plate along pile core shell bottom plate lower surface, 2 anti-jump bolts hole of bottom plate are symmetrically set, The anti-rotation key slot center line 261mm of centre distance bottom plate of the anti-jump bolt hole of bottom plate, apart from pile core shell center 2500mm；Each bottom plate Anti-jump bolt hole includes upper and lower two parts, and top is that radius is 50mm, and depth is 40mm cylindrical bolt hole, and bottom is radius For 33mm, depth is 40mm cylindrical bolt hole；The installation method of HTGR metal in-pile component reactor core shell supporting structure comprises the following steps：(1) the axiality index of the levelness of high temperature air-cooled pile pressure container, pressure vessel hot gas ozzle is adjusted into design will Ask；(2) it is and then by length 158mm, is highly 59mm, width is that 78mm anti-rotation key is put into the anti-rotation of ring-shaped bearing platform Key slot center position；(3) pile core shell is hung in, is placed on ring-shaped bearing platform, is put into the anti-rotation keyway alignment procedures (2) of control bottom plate Anti- rotation key；(4) according to design requirement, adjustment pile core shell circumferential position degree, pile 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 bottom plate of pile core shell bottom plate, lock washer is worn Enter anti-jump screw rod, then screw on nut, stop tightening away from ring-shaped bearing platform lower surface 1mm, by lock washer locking nut, Installation terminates.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN112489839B (en) * | 2020-11-27 | 2022-09-13 | 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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| DE2854155A1 (en) * | 1978-12-15 | 1980-07-03 | Hochtemperatur Reaktorbau Gmbh | GAS-COOLED HIGH-TEMPERATURE REACTOR WITH A CARTRIDGED CONSTRUCTION |
| US4756877A (en) * | 1985-11-06 | 1988-07-12 | Westinghouse Electric Corp. | Core barrel support system for nuclear reactors |
| JP4531046B2 (en) * | 2003-08-15 | 2010-08-25 | ぺブル ベッド モジュラー リアクター （プロプリエタリー）リミテッド | Support device |
| EP3422360A1 (en) * | 2013-03-15 | 2019-01-02 | NuScale Power, LLC | Nuclear reactor module |
| CN103871486B (en) * | 2014-02-24 | 2016-08-17 | 清华大学 | A kind of boot band structure limiting HTGR graphite core displacement structure |
| CN206075826U (en) * | 2016-07-12 | 2017-04-05 | 华能山东石岛湾核电有限公司 | HTGR metal in-pile component reactor core shell supporting structure |
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