CN106271157B - Outer barrel and bottom plate welding method in high temperature gas cooled reactor in lower heap core shell pedestal - Google Patents
Outer barrel and bottom plate welding method in high temperature gas cooled reactor in lower heap core shell pedestal Download PDFInfo
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- CN106271157B CN106271157B CN201610761888.XA CN201610761888A CN106271157B CN 106271157 B CN106271157 B CN 106271157B CN 201610761888 A CN201610761888 A CN 201610761888A CN 106271157 B CN106271157 B CN 106271157B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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Abstract
Outer barrel and bottom plate welding method of the maximum deformation quantity control that can ensure bottom plate the invention discloses a kind of in the high temperature gas cooled reactor of≤9.6mm in lower heap core shell pedestal, two inner cylinder toolings and outer barrel tooling are shelved on place, then bottom plate is placed in inner cylinder tooling and outer barrel tooling, welding position is preheated, the welding position of outer barrel is divided into a circumferential direction and in the clockwise direction a, b, c, d, e, f, g, the equal welding region of eight arc length of h, tack welding after the completion of preheating, multi-layer multi-pass welding method is used later, particular order welds the 4th layer for three layers of internal groove weldering → outer three layers → internal groove of groove welding to expire with layer 5 → outer groove welding the 4th and layer 5 → full → outer groove welding of internal groove weldering.It is an advantage of the invention that：Utilize the above method, it is ensured that the maximum deformation quantity control of bottom plate meets the welding quality requirement in terms of nuclear power, improve the service life of pedestal in≤9.6mm, firm welding.
Description
Technical field
The present invention relates to the outer barrels and bottom plate welding method in lower heap core shell pedestal in a kind of high temperature gas cooled reactor.
Background technology
With the proposition of " forth generation Advanced Nuclear Energy Systems " concept, high temperature gas cooled reactor is gradually with its distinctive safety, use
Way extensively and have with the proposition of modular high temperature reactor concept miniaturization, small investment, short construction period the features such as win
The favor of more and more knowledgeable people.
High temperature gas cooled reactor is the advanced reactor for having the 4th generation of technology such as nuclear energy system security feature, it is international nuclear energy field
One of six kinds of alternative heap-type in four generation nuclear power systems, and be the forth generation core that commercialized running can be uniquely realized before the year two thousand twenty
It can system.Main nuclear power in the world is all in actively development high temperature gas cooled reactor technology for power generation and hydrogen manufacturing at present.
Nuclear energy skill of new generation in the world is aimed in the technical foundation of the 10MW high-temperature gas-solid two-phase flows built up in China
The developing direction of art, the experience of foreign high temperature gas cooled reactor build up electricity by autonomous research and development before and after striving 2017
Power is 20MW, the HTGR Nuclear Power Plant demonstration project (hereinafter referred to as HTR-20) with independent intellectual property right.
HTR-20 metal in-pile component reactor core shells are Huaneng Group Shandong Shidao Bay nuclear power plant HTGR Nuclear Power Plant demonstration works
The important component of journey, including reactor core shell component and other associated components.
High temperature nuclear reactor heap core shell is a thin wall type welding straight cylinder structure, there is a pedestal in its lower end.The pedestal is by Tsing-Hua University
Nuclear energy technology design and research institute of university (design and research institute of country's unique specified " high temperature gas-cooled heaping equipment of forth generation nuclear power ") sets
Meter, in the market without the pedestal of second specification.In order to increase the rigidity of overall structure, cylinder upper limb part has the upper of thickening
Flange section, and the lower part thick sections Ze Youxia of cylinder are simplified.5534 millimeters × 20 meters of high temperature nuclear reactor heap core shell overall size about φ, gross weight
About 313 tons, 135 millimeters of base plate thickness is the maximum gauge on entire pedestal, share seven roll cylinder (thickness have 40 millimeters,
90 millimeters of two kinds of specifications).1 piece of positioning plate, size φ 5160mm × δ 115mm, weight 18.8T；10 pieces of pressing plate, size φ
5160mm × δ 65mm, every piece of weight 10.6T.
The erection welding of pedestal is the key that whole equipment manufacture.
As depicted in figs. 1 and 2, the structure of pedestal is more special, is a complicated welding structural element, by bottom plate 3, inner cylinder 4,
Outer barrel 8, inner reinforced plate 9, outer gusset 10, inner ring 11, outer shroud 12 and roller pad 13 form.There are a piece, thickness 135 among bottom plate
Millimeter, a diameter of 5460 millimeters, the large opening of bottom plate center is welded with inner cylinder, and is mutually welded with gusset, is also welded on gusset and bottom plate
Outer barrel, the blank dimension of inner cylinder are the reel of internal diameter φ 1170mm, thickness δ 65mm, and outer cylinder size is internal diameter φ 3900mm, thickness
The reel of δ 50mm.15 radial inside and outside gussets are welded in bottom plate lower part, gusset thickness is 50 millimeters.Inner/outer tube and gusset
Height is 1022 millimeters.The bottom of pedestal is also welded with the inner and outer ring that thickness is δ 60mm, reinforces bottom together with inner/outer tube and gusset
With the rigidity of seat entirety.All welding grooves are all completed by machining, and all weld seams are complete penetraction and fusion in welding, and are detected and closed through MT, UT
Lattice.
Pedestal workpiece material is 12Cr2MolR, and since material C r, Mo content is higher, there is larger tendency of hardenability in when welding,
Welding difficulty is very big.The maximum deformation quantity of bottom plate should be controlled in≤9.6mm, that is to say, that control is within allowance, now
Conventional soldering method can not ensure bottom plate maximum deformation quantity control in≤9.6mm.
Invention content
The technical problem to be solved by the present invention is to：There is provided it is a kind of can ensure bottom plate maximum deformation quantity control≤
Outer barrel and bottom plate welding method in the high temperature gas cooled reactor of 9.6mm in lower heap core shell pedestal.
In order to solve the above technical problems, the technical solution adopted by the present invention is：Lower heap core shell bottom in a kind of high temperature gas cooled reactor
Outer barrel in seat and bottom plate welding method, two inner cylinder toolings and outer barrel tooling are shelved on place, inner cylinder tooling and outer barrel
Tooling is all cylindrical shape, and the diameter of outer barrel tooling is more than the diameter of inner cylinder tooling, bottom plate is then placed on inner cylinder tooling and outer barrel
In tooling, the center of circle and the center of circle of inner cylinder tooling, outer barrel tooling of bottom plate are concentric, to the two weld part after outer barrel is placed on bottom plate
Position carries out preheating the welding region for being formed by preheated zone covering outer barrel and bottom plate up to 205 DEG C or more and inwardly outer extension,
The welding position 50mm or more of boundary on outer barrel and bottom plate both distances respectively, the weld part of outer barrel after preheated zone extends
Position is divided into a circumferential direction and in the clockwise direction the equal welding region of eight arc length of a, b, c, d, e, f, g, h, preheats
Tack welding is carried out to outer barrel and bottom plate after the completion, a circle inclined-plane, inclined-plane and backplate surface in outer barrel are both provided with inside and outside outer barrel
V-arrangement internal groove is formed, the inclined-plane outside outer barrel forms the outer groove of V-arrangement with backplate surface, uses multi-layer multi-pass welding method, tool later
Body sequence is that internal groove welds three layers → outer three layers → internal groove of groove welding and welds the 4th layer and layer 5 → outer groove welding the 4th and the
Full → outer groove welding of five layers → internal groove weldering is full, while a → e → c → g → b → f → d in sequence again when welded at every layer
→ h, the temperature in the region that preheated zone covers before ensureing always in the whole welding process is at 205 DEG C or more.
When the tack welding, the weld seam of tack welding is located in outer groove, tack welding sequence be a → e → c → g → b →
F → d → h, the arc length M for positioning welding line and the relationship of outer barrel outer diameter D are M=π D/24, to positioning welding line striking after being soldered
It polishes with arc end is received so that the section after positioning welding line expansion after polishing is in isosceles trapezoid, the base angle of isosceles trapezoid
It is 23 °~35 °.
The internal groove angle is 20 °~28 °, and outer bevel angle is equal with internal groove angle.
The beneficial effects of the invention are as follows：Utilize the above method, it is ensured that the control of the maximum deformation quantity of bottom plate≤
9.6mm, firm welding meet the welding quality requirement in terms of nuclear power, improve the service life of pedestal.
Description of the drawings
Fig. 1 is the vertical view of heap core shell pedestal under metal in-pile component in HTGR Nuclear Power Plant of the present invention；
Fig. 2 is A-A sectional views in Fig. 1；
Fig. 3 is outer barrel and bottom plate partial cross-sectional view in Fig. 1；
Fig. 4 is circumference soldering regional distribution chart in Fig. 1；
Fig. 5 is the sectional view that welding line deployment opening is positioned in Fig. 1.
In figure：1, inner cylinder tooling, 2, outer barrel tooling, 3, bottom plate, 4, inner cylinder, 5, internal groove, 6, outer groove, 7, tack welding weldering
Seam, 8, outer barrel, 9, inner reinforced plate, 10, outer gusset, 11, inner ring, 12, outer shroud, 16, roller pad.
Specific implementation mode
Below in conjunction with the accompanying drawings, detailed description of the present invention specific embodiment.
As depicted in figs. 1 and 2, the outer barrel in high temperature gas cooled reactor of the present invention in lower heap core shell pedestal is welded with bottom plate
Two inner cylinder toolings 1 and outer barrel tooling 2 are shelved on place by method, and inner cylinder tooling 1 and outer barrel tooling 2 are all cylindrical shape, outside
The diameter of cylinder tooling 2 is more than the diameter of inner cylinder tooling 1, then bottom plate 3 is placed in inner cylinder tooling 1 and outer barrel tooling 2, bottom plate 3
The center of circle and the center of circle of inner cylinder tooling 1, outer barrel tooling 2 it is concentric, after outer barrel 8 is placed on bottom plate 3 to the two welding position carry out
Preheating is formed by preheated zone covering 8 He of outer barrel until more than 205 DEG C (temperature ensures that the weldability of bottom plate reaches best)
The welding region of bottom plate 3 and inwardly outer extension, (to external radiation i.e. centered on welding region) in outer barrel 8 after the extension of preheated zone
With the boundary on bottom plate 3 respectively distance both welding position 50mm or more, as shown in figure 4, the welding position of outer barrel 8 is in circumference
It is divided on direction and in the clockwise direction the equal welding region of eight arc length of a, b, c, d, e, f, g, h, it is right after the completion of preheating
Outer barrel 8 and bottom plate 3 carry out tack welding, as shown in figure 3, a circle inclined-plane is both provided with inside and outside outer barrel 8, inclined-plane and bottom in outer barrel 8
3 surface of plate forms V-arrangement internal groove 5, and the inclined-plane outside outer barrel 8 forms the outer groove 6 of V-arrangement with 3 surface of bottom plate, uses multilayer multiple tracks later
Welding method, particular order are that internal groove 5 welds three layers → outer groove 6 and welds three layers → internal groove 5 and welds the 4th layer and layer 5 → outer
The weldering of groove 6 the 4th and full → outer weldering of groove 6 of the weldering of layer 5 → internal groove 5 are full, at the same when welded at every layer again in sequence a →
The temperature of e → c → g → b → f → d → h, the region that preheated zone covers before ensureing always in the whole welding process exist
205 DEG C or more.
When the tack welding, the weld seam of tack welding is located in outer groove 6, and tack welding sequence is a → e → c → g → b
→ f → d → h, the arc length M for positioning welding line 7 and the relationship of outer barrel outer diameter D are M=π D/24, to positioning welding line 7 after being soldered
Striking and receipts arc end are polished so that the section after the positioning welding line 7 after polishing is unfolded is in isosceles trapezoid-Fig. 5, isosceles ladder
The base angle of shape is 23 °~35 ° intensity that tack welding is effectively ensured, and prevents workpiece in welding process from splitting.
5 angle of the internal groove is 20 °~28 °, and 6 angle of outer groove is equal with 5 angle of internal groove, and weld seam is effectively prevent to connect
Both ends not weld penetration when head.
It is an advantage of the invention that：Product jointing requirement in terms of nuclear power is all very high, and equipment is big, and welding difficulty is big, in utilization
State method, it is ensured that the maximum deformation quantity of bottom plate is controlled in≤9.6mm, and firm welding meets the welding quality in terms of nuclear power
It is required that improving the service life of pedestal.
Claims (3)
1. outer barrel and bottom plate welding method in high temperature gas cooled reactor in lower heap core shell pedestal, it is characterised in that：By inner cylinder tooling and
Outer barrel tooling is shelved on place, and inner cylinder tooling and outer barrel tooling are all cylindrical shape, and the diameter of outer barrel tooling is more than inner cylinder tooling
Diameter, then bottom plate is placed in inner cylinder tooling and outer barrel tooling, the center of circle in the center of circle of bottom plate and inner cylinder tooling, outer barrel tooling
With one heart, preheating is carried out up to 205 DEG C or more to the two welding position after outer barrel being placed on bottom plate, preheated zone is formed by and covers
The welding region of lid inner cylinder and bottom plate and it is inwardly outer extend, boundary on outer barrel and bottom plate distance respectively after preheated zone extends
The welding position 50mm or more of the two, the welding position of outer barrel in a circumferential direction and be divided into the clockwise direction a, b, c, d,
E, eight arc length of f, g, h equal welding region carries out tack welding to outer barrel and bottom plate after the completion of preheating, is respectively provided with inside and outside outer barrel
There is a circle inclined-plane, the inclined-plane in outer barrel forms V-arrangement internal groove with backplate surface, and the inclined-plane outside outer barrel forms V-arrangement with backplate surface
Outer groove, it is three layers of internal groove weldering → outer three layers → internal groove of groove welding to use multi-layer multi-pass welding method, particular order later
Weld the 4th layer expires with layer 5 → outer groove welding the 4th and layer 5 → full → outer groove welding of internal groove weldering, while being welded at every layer
When a → e → c → g → b → f → d → h in sequence again, preheated zone is covered before ensureing always in the whole welding process
The temperature in the region of lid is at 205 DEG C or more.
2. outer barrel and bottom plate welding method in high temperature gas cooled reactor according to claim 1 in lower heap core shell pedestal, special
Sign is：When the tack welding, the weld seam of tack welding is located in outer groove, and tack welding sequence is a → e → c → g → b → f
→ d → h, it is M=π D/24 to position the arc length M of welding line and the relationship of outer barrel outer diameter D, after being soldered to positioning welding line striking and
It receives arc end to polish so that the section after positioning welding line expansion after polishing is in isosceles trapezoid, and the base angle of isosceles trapezoid is
23°~35°。
3. outer barrel and bottom plate welding method in high temperature gas cooled reactor according to claim 1 in lower heap core shell pedestal, special
Sign is：The internal groove angle is 20 ° ~ 28 °, and outer bevel angle is equal with internal groove angle, both internal groove and outer groove
Bottom contact and contact point be located at the centre position of outer barrel thickness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610761888.XA CN106271157B (en) | 2016-08-30 | 2016-08-30 | Outer barrel and bottom plate welding method in high temperature gas cooled reactor in lower heap core shell pedestal |
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| CN201610761888.XA CN106271157B (en) | 2016-08-30 | 2016-08-30 | Outer barrel and bottom plate welding method in high temperature gas cooled reactor in lower heap core shell pedestal |
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| CN106271157A CN106271157A (en) | 2017-01-04 |
| CN106271157B true CN106271157B (en) | 2018-08-10 |
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| CN106996843B (en) * | 2017-05-05 | 2023-02-28 | 哈电集团（秦皇岛）重型装备有限公司 | High-temperature gas cooled reactor steam outlet connecting pipe clamp pretightening force measuring device and method |
| CN108994476B (en) * | 2018-09-12 | 2021-09-03 | 上海电气核电设备有限公司 | Welding process for improving quality of J-shaped groove weld joint formed by connecting pipe and end enclosure |
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| CN101081460A (en) * | 2007-03-26 | 2007-12-05 | 南阳二机石油装备(集团)有限公司 | Large-sized T shaped joint full penetration assembled welding process |
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| CN104439740A (en) * | 2014-11-12 | 2015-03-25 | 中国十九冶集团有限公司南京分公司 | Welding method for furnace top flange of blast furnace |
| CN105195860A (en) * | 2015-09-17 | 2015-12-30 | 中建钢构有限公司 | Dark side abutting and tilting welding method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105209211B (en) * | 2013-03-12 | 2018-06-19 | 洛克希德马丁公司 | Friction stir welding and the product produced thereby in pipe end joint |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101081460A (en) * | 2007-03-26 | 2007-12-05 | 南阳二机石油装备(集团)有限公司 | Large-sized T shaped joint full penetration assembled welding process |
| CN102717197A (en) * | 2012-06-20 | 2012-10-10 | 东方电气集团东方锅炉股份有限公司 | Deep-groove sealing weld tube plate deformation control method for flexible tube plates of heat exchanger with straight tubes |
| CN104439740A (en) * | 2014-11-12 | 2015-03-25 | 中国十九冶集团有限公司南京分公司 | Welding method for furnace top flange of blast furnace |
| CN105195860A (en) * | 2015-09-17 | 2015-12-30 | 中建钢构有限公司 | Dark side abutting and tilting welding method |
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