CN101829856B - Method for manufacturing superlarge spherical seal head - Google Patents
Method for manufacturing superlarge spherical seal head Download PDFInfo
- Publication number
- CN101829856B CN101829856B CN2010101640384A CN201010164038A CN101829856B CN 101829856 B CN101829856 B CN 101829856B CN 2010101640384 A CN2010101640384 A CN 2010101640384A CN 201010164038 A CN201010164038 A CN 201010164038A CN 101829856 B CN101829856 B CN 101829856B
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- China
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- steel plate
- dome head
- group
- manufacturing approach
- ring part
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
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- 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 provides a method for manufacturing a superlarge spherical seal head, which comprises the steps of: providing a first group of steel plates to form a first ring part of a spherical seal head, wherein the closed end of the spherical seal head is formed by the first ring part; providing at least one group of steel plates to form at least one middle ring part of the spherical seal head; and providing the last group of steel plates to form an outmost ring part of the spherical seal head, wherein the open end of the spherical seal head is formed by the outmost ring part. Corresponding steel plates of adjacent groups and adjacent steel plates of each group of steel plates are finally interconnected through welding. A sectional forming method is applied to the spherical seal head, the seal head is formed step by step through deformation of each area, and larger deformation is dispersed and localized, therefore, the deformation of each area can be even to effectively avoid defects, such as crinkles and the like.
Description
Technical field
The present invention relates to the superlarge spherical seal head manufacturing approach, relate in particular to the manufacturing approach of large nuclear power station containment end socket.
Background technology
Steel superlarge spherical seal head (opening diameter is generally tens of rice), for example the manufacturing of large nuclear power station containment end socket is very difficult, because it can't be accomplished through one-time formed method usually.Therefore in addition, the bottom spherical of this end socket is because ratio of curvature is bigger, is prone to wrinkling defective and reduces Forming Quality.In addition, because the opening diameter of this sphere (bowl-shape or pot cover shape) end socket is very big, therefore in the hoisting process of end socket, distortion appears in end socket whole (especially opening part) easily.
Summary of the invention
The manufacturing approach that the purpose of this invention is to provide a kind of superlarge spherical seal head, it can make high-quality superlarge spherical seal head effectively.
Further aim of the present invention is to prevent the distortion of this ultra-large type end socket in hoisting process effectively.
According to dome head manufacturing approach of the present invention, comprise step: provide first group of steel plate to form the first ring part of dome head, wherein first ring partly constitutes the blind end (ball top) of dome head; Provide at least one group of steel plate to form at least one middle ring part of dome head; And providing last group steel plate to form the outermost ring part of dome head, the outermost ring partly constitutes the open end (opening) of dome head.Wherein finally all interconnect between the corresponding steel plate of adjacent set and between the adjacent steel plate of every group of steel plate through welding.
Middle ring part can comprise second ring part and the 3rd ring part, and wherein second ring part is formed by second group of steel plate, and the 3rd ring part is formed by the 3rd group of steel plate.
In a preferred embodiment of the invention, first group of steel plate comprises two block plates, and second group of steel plate comprises 6 block plates, and the 3rd group of steel plate comprises 24 block plates, and the 4th group of steel plate comprises 32 block plates.
In another preferred embodiment of the present invention; Between the corresponding steel plate of adjacent set and between the adjacent steel plate of every group of steel plate before finally interconnecting through welding; At first for example organize annex etc. is interfixed, and then carry out preliminary spot welding and fix with securing member.
In addition, can also use powerful group to the device corresponding steel plate that aligns.
In the further preferred embodiment of the present invention, also comprise the step that stiffening ring is provided.Stiffening ring is the annular corresponding with the end socket opening that is formed by the multistage enforced loop plane.The radial width of enforced loop plane is greater than the thickness of the steel plate that forms the end socket opening.At least one pair of radially relative baffle plate of welding on every section enforced loop plane, the position of the interior outer baffle in the every pair of baffle plate corresponds respectively to the inner periphery and the excircle of said open end.Then each section enforced loop plane is lifted on the end socket open end, and makes last every block plate of organizing steel plate between corresponding a pair of baffle plate.Weld each section of enforced loop plane to form whole stiffening ring after each section of alignment enforced loop plane.At last, between the steel plate of corresponding baffle plate and formation end socket opening, squeeze into chock.
The width of every pair of baffle plate is preferably along the radially extension of stiffening ring.
Enforced loop plane, baffle plate and chock are all preferably processed by steel.
In addition, before each section of lifting enforced loop plane, at least two sections enforced loop planes are welded to each other together.
In addition, preferably between the steel plate of corresponding Internal baffle and formation end socket opening, squeeze into chock.
Dome head of the present invention adopts the sectional forming method, through each regional distortion, realizes the shaping of end socket step by step, distortion discretization and localization that will be bigger, thus let the each several part distortion evenly can suppress defective such as wrinkling effectively as far as possible.
In addition, constitute metastable structure, thereby in the hoisting process of end socket, be difficult for to produce distortion and guarantee installation accuracy thereafter owing to stiffening ring is installed on the dome head of the present invention.
Description of drawings
Fig. 1 is the stereogram of dome head made according to the method for the present invention;
Fig. 2 is the vertical view of dome head shown in Figure 1; And
Fig. 3 is the partial perspective view that the dome head of stiffening ring is installed according to of the present invention.
The specific embodiment
Below present invention will be described in detail with reference to the accompanying.
The present invention can be used for various dome heads, for example the manufacturing of normal ellipsoidal head, dished (torispherical) head etc.
As an example, end socket of the present invention by four rings parts the welding of totally 64 block plates form.Every block plate can be by hydraulic press according to reservation shape compression moulding.
Referring to Fig. 1 and 2, (blind end) to opening (open end) point is formed by four loop portions dome head altogether from ball top.First loop portions is divided the blind end that forms end socket, comprises two block plates.Second ring part and the 3rd loop portions are divided the middle ring part that forms end socket, comprise 6 block plates and 24 block plates respectively.Fourth Ring circle part forms the open end of end socket, comprises 32 block plates.
Below illustrate end socket manufacturing approach of the present invention.
1. the assembling of first ring:
The first ring assembling bracket is installed;
Lift the 1st block plate to be located at the precalculated position of assembling bracket;
Lift the 2nd block plate to be located at the precalculated position of assembling bracket;
Load onto powerful group to device (this area conventional equipment, at this for being not described in detail its structure and method for using for purpose of brevity), the step surface between elimination plate and the plate to two boards;
Weld gap between detection and adjustment plate and the plate installs securing member and like group annex is fixed after adjusting;
Two block plates are carried out preliminary spot welding to be fixed.
2. the assembling of second ring:
The second ring assembling bracket is installed;
Hanger and group be welded respectively to annex for the second ring steel plate;
Lift second ring the 1st block plate with the precalculated position that is located at assembling bracket and install group annex is fixed;
Lift the 2nd block plate to be located at the precalculated position of assembling bracket, with group annex is fixed then, and use powerful group that device is eliminated step surface;
Lift and assemble the 3rd as stated successively to the 6th block plate;
Carry out preliminary spot welding and fix, prevent that powerful group is loosening and cause the sheet material displacement to device.
3. carry out the lifting and the assembling of 24 block plates and 32 block plates that the Fourth Ring is enclosed of the 3rd ring as stated.
4. when the position of detecting all steel plates meets the requirements, all 64 block plates are carried out final welding to form dome head.
In order to prevent above-mentioned dome head in hoisting process, for example the distortion when the scene of making is transported to the installation site can also be installed stiffening ring for dome head.
With reference to Fig. 3, it shows the partial perspective view that the dome head opening part of stiffening ring is installed according to of the present invention.Make for ease and install, stiffening ring by multistage steel ring flat-plate 2 for example 16 sections form, can be earlier on the ground it be welded into 8 sections so that lifting.
On each section of stiffening ring after the welding, mark the interior outer fix line (promptly corresponding respectively to the inner periphery and the excircle of end socket opening) of end socket opening or open end, can accomplish this work on the ground.
Then, the radially relative paired baffle plate 3 of welding on the lower surface of each section of stiffening ring ring flat-plate 2.Two baffle plates 3 in the every pair of baffle plate align with the interior outer fix line of stiffening ring respectively.It is spacing that the top edge of every block plate 1 of Fourth Ring circle can use 3 pairs of baffle plates.The position of these 3 pairs of baffle plates lay respectively at steel plate 1 top edge the centre and apart from two ends the position of about 300mm.
Then, each section of stiffening ring is lifted on the end socket opening, and the steel plate 1 that makes the Fourth Ring circle that forms the end socket opening is between interior outer baffle 3 with crane.
Group makes inside and outside position line alignment to each section of stiffening ring, and the circularity of the interior position line of inspection.
The butt weld of symmetry welding stiffening ring.
After stiffening ring is welded into integral body, between Internal baffle 3 and steel plate 1, squeeze into chock 4, steel side's wedge for example, thus make steel plate 1 be close to outer baffle (at the opposite side of steel plate 1, therefore not shown in Fig. 3), to keep the cylindricity of dome head opening better.As shown in Figure 3, the width of two baffle plates 3 in the every pair of baffle plate is along the radially extension of stiffening ring.Like this, the fixation of baffle plate is just more stable.
After this, at the end socket hoisted in position and prepare and cell therefor for example before the cylinder welding assembly of containment, can pull down stiffening ring.
It will be appreciated by those skilled in the art that the foregoing description just is used to explain the present invention, but not be used to limit the present invention.
Claims (9)
1. a dome head manufacturing approach is characterized in that, comprises step:
Provide first group of steel plate to form the first ring part of dome head, wherein first ring partly constitutes the blind end of dome head;
Provide at least one group of steel plate to form at least one middle ring part of dome head; And
Provide last group steel plate to form the outermost ring part of dome head, the outermost ring partly constitutes the open end of dome head,
Wherein finally all interconnect between the corresponding steel plate of adjacent set and between the adjacent steel plate of every group of steel plate through welding;
Said method also comprises step:
The multistage enforced loop plane is provided, and said multistage enforced loop plane forms the corresponding annular of circumference with the open end of dome head, and the radial width of enforced loop plane is greater than the steel plate thickness of the open end of formation dome head;
At least one pair of radially relative baffle plate of welding on every section enforced loop plane, the position of the interior outer baffle in the every pair of baffle plate corresponds respectively to the inner periphery and the excircle of the open end of dome head;
Each section enforced loop plane is lifted on the open end of dome head, and makes last every block plate of organizing steel plate between corresponding a pair of baffle plate;
Each section enforced loop plane that aligns welds each section enforced loop plane to form whole stiffening ring afterwards; And
At corresponding baffle plate with form between the steel plate of open end of dome head and squeeze into chock.
2. according to the dome head manufacturing approach of claim 1, wherein provide the step of at least one the middle ring part of at least one group of steel plate to comprise to form dome head:
Provide second group of steel plate to form the second ring part of dome head; With
Provide the 3rd group of steel plate to form the 3rd ring part of dome head.
3. according to the dome head manufacturing approach of claim 2, wherein first group of steel plate comprises two block plates, and second group of steel plate comprises 6 block plates, and the 3rd group of steel plate comprises 24 block plates, and the 4th group of steel plate comprises 32 block plates.
4. according to the dome head manufacturing approach of one of claim 1-3; Wherein between the corresponding steel plate of adjacent set and between the adjacent steel plate of every group of steel plate before finally interconnecting through welding; At first interfix, and then carry out preliminary spot welding and fix with securing member.
5. according to the dome head manufacturing approach of claim 4, wherein use powerful group to the device corresponding steel plate that aligns.
6. according to the dome head manufacturing approach of claim 1, wherein the width of baffle plate is along the radially extension of stiffening ring.
7. according to the dome head manufacturing approach of claim 1, wherein enforced loop plane, baffle plate and chock are processed by steel.
8. according to the dome head manufacturing approach of claim 1, wherein before each section of lifting enforced loop plane, at least two sections enforced loop planes are welded to each other together.
9. according to the dome head manufacturing approach of claim 1, wherein at corresponding Internal baffle with form between the steel plate of open end of dome head and squeeze into chock.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101640384A CN101829856B (en) | 2010-04-14 | 2010-04-14 | Method for manufacturing superlarge spherical seal head |
| PCT/CN2011/000657 WO2011127753A1 (en) | 2010-04-14 | 2011-04-13 | Manufacturing method for ultralarge spherical closure head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101640384A CN101829856B (en) | 2010-04-14 | 2010-04-14 | Method for manufacturing superlarge spherical seal head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101829856A CN101829856A (en) | 2010-09-15 |
| CN101829856B true CN101829856B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101640384A Active CN101829856B (en) | 2010-04-14 | 2010-04-14 | Method for manufacturing superlarge spherical seal head |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101829856B (en) |
| WO (1) | WO2011127753A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829856B (en) * | 2010-04-14 | 2012-05-30 | 中国核工业二三建设有限公司 | Method for manufacturing superlarge spherical seal head |
| CN102069277B (en) * | 2010-12-08 | 2013-01-02 | 太原重工股份有限公司 | Submerged automatic arc welding tool for segment-shaped seal head |
| CN102990287B (en) * | 2011-09-16 | 2015-04-29 | 沈阳远大铝业工程有限公司 | Processing method of decorative stainless steel ball with thick wall |
| CN102423833B (en) * | 2011-09-25 | 2013-05-08 | 中国葛洲坝集团股份有限公司 | Method for welding and integrally hoisting volute choke plug of large-sized hydropower station |
| CN102700870B (en) * | 2011-10-11 | 2014-05-07 | 国家核电技术有限公司 | Seal head module, large container and method for manufacturing seal head module and large container |
| CN102848056B (en) * | 2012-09-28 | 2014-10-01 | 中国核工业华兴建设有限公司 | Field welding method for wall boards of steel lining of nuclear power plant |
| CN103212953B (en) * | 2013-04-27 | 2015-04-15 | 青岛兰石重型机械设备有限公司 | Assembling and welding technology of middle shell cover, accessories and barrel of hydrogenation reactor |
| CN104475993A (en) * | 2014-10-30 | 2015-04-01 | 南通虹波机械有限公司 | Manufacture method of thickener closed trough bottom plate |
| CN104763156B (en) * | 2015-04-01 | 2017-01-25 | 中国核工业华兴建设有限公司 | Assembling method of steel safety housing bottom seal head of nuclear power plant |
| CN106141476B (en) * | 2016-07-22 | 2018-06-29 | 中国化学工程第三建设有限公司 | A kind of assemble method of super-large diameter without ribbed stiffener thin-wall semi top seal closure |
| CN107345452B (en) * | 2017-06-30 | 2020-01-21 | 中国核工业第五建设有限公司 | Nuclear power station steel containment vessel top head assembling support |
| CN108381195B (en) * | 2018-04-23 | 2023-08-04 | 天津友发管道科技股份有限公司 | Lining plastic stainless steel ring processing production line |
| CN112139760A (en) * | 2019-10-28 | 2020-12-29 | 上海宝冶集团有限公司 | Forming processing method of large-diameter thick-wall special-shaped section end socket |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4181572A (en) * | 1977-06-16 | 1980-01-01 | The United States Of America As Represented By The United States Department Of Energy | Closure head for a nuclear reactor |
| CN1899756A (en) * | 2006-06-30 | 2007-01-24 | 河南科隆石化装备有限公司 | Method for processing seal head |
| CN101332555B (en) * | 2008-08-06 | 2010-07-21 | 中国原子能科学研究院 | Machining and welding process of large seal head |
| CN101524726B (en) * | 2009-03-28 | 2010-09-29 | 山东核电设备制造有限公司 | Ultra-large type head plate integral pressing and molding technology and safe shell sealing head |
| CN101829856B (en) * | 2010-04-14 | 2012-05-30 | 中国核工业二三建设有限公司 | Method for manufacturing superlarge spherical seal head |
| CN101967886B (en) * | 2010-11-16 | 2013-06-05 | 中国核工业第五建设有限公司 | Assembly and installation methods of steel containment vessel of nuclear power station |
-
2010
- 2010-04-14 CN CN2010101640384A patent/CN101829856B/en active Active
-
2011
- 2011-04-13 WO PCT/CN2011/000657 patent/WO2011127753A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN101829856A (en) | 2010-09-15 |
| WO2011127753A1 (en) | 2011-10-20 |
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