CN102501019B - Method for manufacturing first layer of steel lining dome of nuclear power station - Google Patents
Method for manufacturing first layer of steel lining dome of nuclear power station Download PDFInfo
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- CN102501019B CN102501019B CN 201110351452 CN201110351452A CN102501019B CN 102501019 B CN102501019 B CN 102501019B CN 201110351452 CN201110351452 CN 201110351452 CN 201110351452 A CN201110351452 A CN 201110351452A CN 102501019 B CN102501019 B CN 102501019B
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Abstract
The invention provides a method for manufacturing the first layer of a steel lining dome of a nuclear power station, which comprises the following steps of: (1) manufacturing a required die to ensure the curvature requirement and the dimensional accuracy of the die and no suspended weld seam on a equally dividing plate; (2) fabricating an equally dividing plate conforming to the requirements such as dimensional accuracy and the like; (3) fixing the equally dividing plate in a corresponding position on the die; (4) welding a steel plate backing on the outer side of one end of the die in contact with a steel platform; (5) lifting one end of the die by using a forklift truck so that the weld seam welding position of the equally diving plate on the die stays in a nearly horizontal state; (6) carrying submerged arc automatic welding on weld seams of the equally dividing plate; (7) welding all weld seams on the convex surface to form a wall plate on the first layer of a dome, and welding an anchoring support on the convex surface; (8) removing the wall plate from the die, and turning the wall plate by 180 DEG so that the concave surface of the wall plate faces upward; and (9) repeating the step (5) to the step (6), and welding weld seams on the concave surface of the wall plate until all weld seams are welded. With the manufacturing method provided by the invention, the welding quality and efficiency can be obviously improved.
Description
Technical field
The present invention relates to the manufacture method of dome in a kind of nuclear power station steel lining, relate in particular to dome ground floor manufacture method in a kind of nuclear power station steel lining, belong to the construction steel structure technical field of construction.
Background technology
It in the steel lining seal casinghousing that constitutes by base plate, the truncated cone, cylindrical shell and dome four major parts, part for nuclear power plant containment shell, it is the 3rd road safety curtain of nuclear island, also be last one security perimeter, it plays a part to prevent nuclear leakage under the extreme accident, and its quality quality has directly influenced civil engineering cycle and security, reliability and the service life of nuclear power station in running of nuclear island.Installation welding capacity in the steel lining is big, and the duration is longer.
In order to improve the prefabricated welding efficiency of dome ground floor in the steel lining, guarantee the quality of production of dome, engineering has been made very strict regulation to the welding of dome in the nuclear power plant containment shell steel lining.The traditional manual electric arc welding of prefabricated common employing of dome ground floor in the steel lining, to guarantee the welding quality of dome, but the sphere radian of dome ground floor is bigger, the welding efficiency and the welding quality that add manual electric arc welding are bigger for artificial factor dependence, be easy in the welding process of dome, produce the weld defect that subjective factor produces, make the welding quality of dome ground floor be difficult for guaranteeing, and the welding efficiency of manual electric arc welding is lower.
Summary of the invention
The objective of the invention is to, overcome problems of the prior art, propose dome ground floor manufacture method in a kind of nuclear power station steel lining, can improve the prefabricated welding efficiency of dome effectively, and guarantee welding quality.
For solving above technical problem, the invention provides dome ground floor manufacture method in a kind of nuclear power station steel lining, in turn include the following steps: step 1, design document and drawing requirement according to the dome ground floor, produce the loose tool that matches with dome ground floor wallboard, and the radian that guarantees loose tool requires and dimensional accuracy, and the splicing welding joint of five equilibrium plate on loose tool be not in overhead positions, fits tightly with loose tool; Step 2 by full-automatic flame cutting machine and veneer reeling machine, precasts the five equilibrium plate that satisfies dimensional accuracy, horizontal radian and vertical radian requirement; Step 3, the five equilibrium plate with prefabricated is placed into the relevant position on the loose tool, by frock and jig and the right mode of spot welding group, waiting branch plate to be fixed on the loose tool, and makes the five equilibrium plate satisfy requirement in the step 1; Step 4, the group of five equilibrium plate to and finish with the applying of loose tool after, in contact with the steel platform outside of part of an end of loose tool, the welding steel backer, when making the other end rising of loose tool, loose tool can not slide on steel platform; Step 5 is utilized large-scale fork truck, and an end of loose tool is raise, and makes the weld seam welding position of five equilibrium plate on the loose tool be in level of approximation state with angle＜30 of horizontal plane °; Step 6 is welded the weld seam employing Lincoln weld of five equilibrium plate, and in the welding process, slowly the lifting loose tool guarantees that welding condition satisfies the requirement in the step 5 all the time; Step 7 has constituted complete dome ground floor wallboard after having welded all weld seams of each five equilibrium plate convex surface, and welding prevents the anchoring angle bar frame of wallboard distortion on the convex surface of dome ground floor wallboard; Step 8 is taken off dome ground floor wallboard from loose tool, overturn 180 °, makes the concave upright of wallboard; Step 9, repeating step five be to the content of step 6, utilizes cooperating of fork truck and welding operation, and the weld seam of welding wallboard concave surface is all finished until welding job.
With respect to prior art, the present invention has obtained following beneficial effect: dome ground floor manufacture method of the present invention, utilize fork truck to match with Lincoln weld, can significantly reduce the total time of dome shop-fabricated, all the time guarantee in the welding process that weld seam is in the level of approximation state, can effectively avoid the generation of weld defect, significantly improve welding quality and welding efficiency, after the welding of wallboard convex surface is finished, welding anchoring angle bar frame before upset, effectively control the distortion of dome pre-fabricated panel in welding process, thereby guaranteed the quality and the productivity effect of actual product.
As preferred version of the present invention, the end that the loose tool arc length is long is decided to be the A end, and the short end of loose tool arc length is decided to be the E end, and the A end outside is a position, and the E end outside is No. two positions; Loose tool held to the projection on steel platform of E end from A be divided into AB, BC, CD and DE section successively; To the welding process of step 6 wallboard convex surface, (1) utilizes fork truck a position loose tool A end to be increased to then and makes the AB section be in the level of approximation state, welding AB section earlier the described steel plate backer of loose tool E end outside welding in described step 4; (2) then make the BC section be in the level of approximation position fork truck decline, welding BC section; (3) fork truck slowly puts down the A end then, and the described steel plate backer of loose tool A end outside welding, fork truck goes to the position again No. two, the E end is increased to make the CD section be in the level of approximation state welding CD section; (4) then fork truck is continued rising again and make the DE section be in the level of approximation state, welding DE section; (5) then fork truck is moved back to the position No. one from No. two positions, loose tool A is held to be increased to make the AB section be in the level of approximation state, repeat (1) to (4) and all finish until the weld seam of wallboard convex surface.Fork truck cooperates with Lincoln weld is organic, and fork truck is taken turns commentaries on classics between a position and No. two positions, and the wallboard convex surface is pressed AB → BC → CD → DE → AB ... the order welding, speed is fast, the efficient height.
As preferred version of the present invention, the end that the loose tool arc length is long is decided to be the A end, and the short end of loose tool arc length is decided to be the E end, and the A end outside is a position, and the E end outside is No. two positions; Loose tool held to the projection on steel platform of E end from A be divided into AB, BC, CD and DE section successively; In the welding process of described step 9 wallboard concave surface, (1) utilizes fork truck a position loose tool A end to be increased to then and makes the DE section be in the level of approximation state, welding DE section earlier the described steel plate backer of loose tool E end outside welding; (2) then make the CD section be in the level of approximation position fork truck decline, welding CD section; (3) fork truck slowly puts down the A end then, and the described steel plate backer of loose tool A end outside welding, fork truck goes to the position again No. two, the E end is increased to make the BC section be in the level of approximation state welding BC section; (4) then fork truck is continued rising again and make the AB section be in the level of approximation state, welding AB section; (5) then fork truck is moved back to the position No. one from No. two positions, loose tool A is held to be increased to make the DE section be in the level of approximation state, repeat (1) to (4) and all finish until the weld seam of wallboard concave surface.Fork truck cooperates with Lincoln weld is organic, and fork truck is taken turns commentaries on classics between a position and No. two positions, and the wallboard concave surface is pressed DE → CD → BC → AB → DE ... the order welding, speed is fast, the efficient height.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the construction illustration of welding convex surface in the dome ground floor manufacture method in the nuclear power station steel lining of the present invention.
Fig. 2 is the construction illustration of welding concave surface in the dome ground floor manufacture method in the nuclear power station steel lining of the present invention.
Among the figure: 1. position; 2. No. two positions; 3. steel platform; 4. fork truck; 5. submerged arc welding machine; 6. loose tool; 7. dome ground floor wallboard.
The specific embodiment
Dome ground floor manufacture method in the nuclear power station steel lining of the present invention in turn includes the following steps:
Step 1, according to the design document and the drawing requirement of dome ground floor, produce the loose tool that matches with dome ground floor wallboard, and guarantee that the radian of loose tool requires and dimensional accuracy, and the splicing welding joint of five equilibrium plate on loose tool be not in overhead positions, fits tightly with loose tool;
The end that the loose tool arc length is long is decided to be the A end, and the short end of loose tool arc length is decided to be the E end, and the A end outside is a position, and the E end outside is No. two positions; Loose tool held to the projection on steel platform of E end from A be divided into AB, BC, CD and DE section successively;
Step 2 by full-automatic flame cutting machine and veneer reeling machine, precasts the five equilibrium plate that satisfies dimensional accuracy, horizontal radian and vertical radian requirement;
Step 3, the five equilibrium plate with prefabricated is placed into the relevant position on the loose tool, by frock and jig and the right mode of spot welding group, waiting branch plate to be fixed on the loose tool, and makes the five equilibrium plate satisfy requirement in the step 1;
Step 4, the group of five equilibrium plate to and finish with the applying of loose tool after, in contact with the steel platform outside of part of an end of loose tool, the welding steel backer, when making the other end rising of loose tool, loose tool can not slide on steel platform;
Step 5 is utilized large-scale fork truck, and an end of loose tool is raise, and makes the weld seam welding position of five equilibrium plate on the loose tool be in level of approximation state with angle＜30 of horizontal plane °;
As shown in Figure 1, to the welding process of step 6 wallboard convex surface, (1) utilizes fork truck a position loose tool A end to be increased to then and makes the AB section be in the level of approximation state, welding AB section earlier loose tool E end outside welding steel backer in step 4; (2) then make the BC section be in the level of approximation position fork truck decline, welding BC section; (3) fork truck slowly puts down the A end then, and loose tool A end outside welding steel backer, fork truck goes to the position again No. two, the E end is increased to make the CD section be in the level of approximation state welding CD section; (4) then fork truck is continued rising again and make the DE section be in the level of approximation state, welding DE section; (5) then fork truck is moved back to the position No. one from No. two positions, loose tool A is held to be increased to make the AB section be in the level of approximation state, repeat (1) to (4) and all finish until the weld seam of wallboard convex surface.
Step 7 has constituted complete dome ground floor wallboard after having welded all weld seams of each five equilibrium plate convex surface, and welding prevents the anchoring angle bar frame of wallboard distortion on the convex surface of dome ground floor wallboard;
Step 8 is taken off dome ground floor wallboard from loose tool, overturn 180 °, makes the concave upright of wallboard;
Step 9, repeating step five be to the content of step 6, utilizes cooperating of fork truck and welding operation, and the weld seam of welding wallboard concave surface is all finished until welding job.
As shown in Figure 2, in the welding process of step 9 wallboard concave surface, (1) utilizes fork truck a position loose tool A end to be increased to then and makes the DE section be in the level of approximation state, welding DE section earlier loose tool E end outside welding steel backer; (2) then make the CD section be in the level of approximation position fork truck decline, welding CD section; (3) fork truck slowly puts down the A end then, and loose tool A end outside welding steel backer, fork truck goes to the position again No. two, the E end is increased to make the BC section be in the level of approximation state welding BC section; (4) then fork truck is continued rising again and make the AB section be in the level of approximation state, welding AB section; (5) then fork truck is moved back to the position No. one from No. two positions, loose tool A is held to be increased to make the DE section be in the level of approximation state, repeat (1) to (4) and all finish until the weld seam of wallboard concave surface.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all falls into the protection domain of requirement of the present invention.
Claims (3)
1. dome ground floor manufacture method in the nuclear power station steel lining is characterized in that, in turn includes the following steps:
Step 1, according to the design document and the drawing requirement of dome ground floor, produce the loose tool that matches with dome ground floor wallboard, and guarantee that the radian of loose tool requires and dimensional accuracy, and the splicing welding joint of five equilibrium plate on loose tool be not in overhead positions, fits tightly with loose tool;
Step 2 by full-automatic flame cutting machine and veneer reeling machine, precasts the five equilibrium plate that satisfies dimensional accuracy, horizontal radian and vertical radian requirement;
Step 3, the five equilibrium plate with prefabricated is placed into the relevant position on the loose tool, by frock and jig and the right mode of spot welding group, waiting branch plate to be fixed on the loose tool, and makes the five equilibrium plate satisfy requirement in the step 1;
Step 4, the group of five equilibrium plate to and finish with the applying of loose tool after, in contact with the steel platform outside of part of an end of loose tool, the welding steel backer, when making the other end rising of loose tool, loose tool can not slide on steel platform;
Step 5 is utilized large-scale fork truck, and an end of loose tool is raise, and makes the weld seam welding position of five equilibrium plate on the loose tool be in level of approximation state with angle＜30 of horizontal plane °;
Step 6 is welded the weld seam employing Lincoln weld of five equilibrium plate, and in the welding process, slowly the lifting loose tool guarantees that welding condition satisfies the requirement in the step 5 all the time;
Step 7 has constituted complete dome ground floor wallboard after having welded all weld seams of each five equilibrium plate convex surface, and welding prevents the anchoring angle bar frame of wallboard distortion on the convex surface of dome ground floor wallboard;
Step 8 is taken off dome ground floor wallboard from loose tool, overturn 180 °, makes the concave upright of wallboard;
Step 9, repeating step five be to the content of step 6, utilizes cooperating of fork truck and welding operation, and the weld seam of welding wallboard concave surface is all finished until welding job.
2. dome ground floor manufacture method in the nuclear power station steel lining according to claim 1 is characterized in that: the end that the loose tool arc length is long is decided to be the A end, and the short end of loose tool arc length is decided to be the E end, and the A end outside is a position, and the E end outside is No. two positions; Loose tool held to the projection on steel platform of E end from A be divided into AB, BC, CD and DE section successively; To the welding process of step 6 wallboard convex surface, (1) utilizes fork truck a position loose tool A end to be increased to then and makes the AB section be in the level of approximation state, welding AB section earlier the described steel plate backer of loose tool E end outside welding in described step 4; (2) then make the BC section be in the level of approximation position fork truck decline, welding BC section; (3) fork truck slowly puts down the A end then, and the described steel plate backer of loose tool A end outside welding, fork truck goes to the position again No. two, the E end is increased to make the CD section be in the level of approximation state welding CD section; (4) then fork truck is continued rising again and make the DE section be in the level of approximation state, welding DE section; (5) then fork truck is moved back to the position No. one from No. two positions, loose tool A is held to be increased to make the AB section be in the level of approximation state, repeat (1) to (4) and all finish until the weld seam of wallboard convex surface.
3. dome ground floor manufacture method in the nuclear power station steel lining according to claim 1 is characterized in that: the end that the loose tool arc length is long is decided to be the A end, and the short end of loose tool arc length is decided to be the E end, and the A end outside is a position, and the E end outside is No. two positions; Loose tool held to the projection on steel platform of E end from A be divided into AB, BC, CD and DE section successively; In the welding process of described step 9 wallboard concave surface, (1) utilizes fork truck a position loose tool A end to be increased to then and makes the DE section be in the level of approximation state, welding DE section earlier the described steel plate backer of loose tool E end outside welding; (2) then make the CD section be in the level of approximation position fork truck decline, welding CD section; (3) fork truck slowly puts down the A end then, and the described steel plate backer of loose tool A end outside welding, fork truck goes to the position again No. two, the E end is increased to make the BC section be in the level of approximation state welding BC section; (4) then fork truck is continued rising again and make the AB section be in the level of approximation state, welding AB section; (5) then fork truck is moved back to the position No. one from No. two positions, loose tool A is held to be increased to make the DE section be in the level of approximation state, repeat (1) to (4) and all finish until the weld seam of wallboard concave surface.
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| CN 201110351452 CN102501019B (en) | 2011-11-09 | 2011-11-09 | Method for manufacturing first layer of steel lining dome of nuclear power station |
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| CN 201110351452 CN102501019B (en) | 2011-11-09 | 2011-11-09 | Method for manufacturing first layer of steel lining dome of nuclear power station |
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| CN102501019B true CN102501019B (en) | 2013-07-31 |
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| CN106181232A (en) * | 2016-07-07 | 2016-12-07 | 淮北海聚环保设备有限公司 | Environmental protection equipment is by interior external mold mould production technology |
| CN115007971A (en) * | 2022-06-22 | 2022-09-06 | 中国核工业华兴建设有限公司 | Single-side welding double-side forming laser tracking MAG automatic welding method for installation of nuclear power station containment steel lining cylinder and dome |
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| US7152384B1 (en) * | 2002-09-10 | 2006-12-26 | Mccarty Gerald Joseph | Dome kit, structure and method |
| CN101125601A (en) * | 2007-09-29 | 2008-02-20 | 中国人民解放军***空军工程建设局 | Method for manufacturing and mounting vault of oil tank |
| CN101913068A (en) * | 2010-07-14 | 2010-12-15 | 中国核工业华兴建设有限公司 | Preparation method of steel lining prefabricated moulding bed in nuclear power station |
| CN101967886A (en) * | 2010-11-16 | 2011-02-09 | 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 |
| CN102071807A (en) * | 2011-01-12 | 2011-05-25 | 中国核工业华兴建设有限公司 | Nuclear power station steel lining modularized construction method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050210767A1 (en) * | 2004-02-21 | 2005-09-29 | Defever Michael D | Trilithic and/or twin shell dome type structures and method of making same |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7152384B1 (en) * | 2002-09-10 | 2006-12-26 | Mccarty Gerald Joseph | Dome kit, structure and method |
| KR20040073409A (en) * | 2004-06-24 | 2004-08-19 | 허석구 | Conversion method of movable container-prefabricated house |
| CN101125601A (en) * | 2007-09-29 | 2008-02-20 | 中国人民解放军***空军工程建设局 | Method for manufacturing and mounting vault of oil tank |
| CN101913068A (en) * | 2010-07-14 | 2010-12-15 | 中国核工业华兴建设有限公司 | Preparation method of steel lining prefabricated moulding bed in nuclear power station |
| CN101967886A (en) * | 2010-11-16 | 2011-02-09 | 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 |
| CN102071807A (en) * | 2011-01-12 | 2011-05-25 | 中国核工业华兴建设有限公司 | Nuclear power station steel lining modularized construction method |
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