CN102071807B - Nuclear power station steel lining modularized construction method - Google Patents
Nuclear power station steel lining modularized construction method Download PDFInfo
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- CN102071807B CN102071807B CN2011100058901A CN201110005890A CN102071807B CN 102071807 B CN102071807 B CN 102071807B CN 2011100058901 A CN2011100058901 A CN 2011100058901A CN 201110005890 A CN201110005890 A CN 201110005890A CN 102071807 B CN102071807 B CN 102071807B
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Abstract
The invention relates to a nuclear power station steel lining modularized construction method, and belongs to the technical field of nuclear power station stack type steel lining construction. The method comprises the following steps of: prefabricating a lining module; manufacturing a lifting wire frame; setting a lifting point; setting a hanging point; hanging and connecting; lifting in place; and laminating and welding step by step, namely laminating a previous annular lining module on a next annular lining module, and welding into an integral pot-shaped steel lining. After the method is adopted, since the forming degree of the steel lining at a prefabrication stage is improved, the construction period of the mounting stage can be obviously shortened, the construction efficiency is improved, the safety risk is reduced, and the aim of improving the construction economy of a nuclear power station is fulfilled.
Description
Technical field
The present invention relates to modular construction method in a kind of nuclear power station steel lining, the job practices of the whole circle lifting of the layering of cylindrical shell in especially a kind of nuclear power station steel lining belongs to nuclear power station heap shaped steel lining and builds technical field of construction.
Background technology
Prevent the iron and steel barrier of nuclear leakage safety guarantee in the steel lining as nuclear power station, bringing into play important effect aspect the nuclear safety risk reducing.
In the nuclear power station construction of having built or having built at present, all adopt the job practices of piecemeal lifting, installation in the nuclear power station steel lining.This kind job practices exists in the numerous and diverse repetition of installation process, the steel lining installs that overall precision is difficult to control, the work high above the ground time is long, security risk is big, takies shortcomings such as the engineering critical path time is long.
Facts have proved; In Nuclear Power Station when construction steel lining construction according to the working method of piecemeal lifting belong to full time period work high above the ground, to take the engineering construction critical path time long, the while intersects with concrete, reinforcement construction each other, construction safety risk is difficult to estimate.This form of construction work operating space when construction is little in addition, can not effectively use construction worker facility to carry out the correction of precision.
Summary of the invention
The objective of the invention is to: modular construction method in a kind of nuclear power station steel lining is provided, thereby significantly improves efficiency of construction, shorten installation period, reduce security risk.
In order to reach above purpose, modular construction method is realized through step is provided in the nuclear power station steel lining of the present invention:
Modular construction method in a kind of nuclear power station steel lining is provided, thus improve in the steel lining moulding degree in the prefabricated stage, shorten erection stage duration, improve efficiency of construction in the nuclear power station steel lining, reduce security risk in the nuclear power construction, improve the economy of nuclear power station construction.
After adopting method of the present invention owing to improved in the steel lining in the moulding degree in prefabricated stage, therefore can significantly shorten erection stage duration, improve efficiency of construction, reduce security risk, reach the purpose that improves nuclear power station construction economy property.
Description of drawings
Below in conjunction with accompanying drawing this construction technology is further described.
Fig. 1 is the lifting space truss structure sketch map of one embodiment of the invention.
Fig. 2 is the vertical view of Fig. 1 embodiment.
Fig. 3 is the shackle structure sketch map of Fig. 1 embodiment.
Fig. 4 is the lateral view of Fig. 3.
Fig. 5 is the lifting bolt structural representation of Fig. 1 embodiment.
Fig. 6 is the lateral view of Fig. 5.
Fig. 7 is structural representation in the steel lining after the present embodiment welding.
The implication of each detail drawing mark sees the following form among the figure:
The specific embodiment
Following with reference to description of drawings specific embodiment of the present invention.Modular construction is carried out according to following steps in the nuclear power station steel lining of present embodiment:
1, preformed liner module---integral body highly is the multi-stage annular lining module of 5.75m for (referring to Fig. 7) in the steel lining of jar shape is divided into, after shop-fabricated, selects the assembly unit place to be made into lining modules at different levels.
2, make the lifting rack---as depicted in figs. 1 and 2; The node spheroid 1 that band is connected screw is by inside and outside two circles, two-layer spaced apart up and down; And externally threaded horizontal, vertical and longitudiual truss bar 2 is fixedly connected by the termination band respectively between adjacent, the neighbouring and inside and outside two adjacent node spheroids in each left and right sides, constitute three-dimensional circular lifting rack; Also connect between inside and outside two circles and the bilevel diagonal angle node spheroid, form herringbone and strengthen structure, to guarantee enough intensity and rigidity by oblique truss rod 3; The lifting rack should equal the external diameter of annular lining module by the pitch diameter of outer ring node ball centre, can guarantee that like this lifting steadily.
3, the Heave Here being set---eight node spheroids 1 that the inner ring selection is uniformly distributed along the circumference on the upper strata of lifting rack are as the Heave Here; Full weld connects like Fig. 3 and two hangers 4 with lifting hole(eyelet) shown in Figure 4 respectively, and the line of centres of lifting hole(eyelet) and corresponding node spheroid and horizontal plane form 45 ° lifting angle.
4, sling point is set---48 node spheroids 1 selecting circumference uniform distribution in the lower floor outer ring of lifting rack are as sling point, wherein eight corresponding with the position, Heave Here, the connection screw screw-in lifting bolt 5 (M36A type standard component) bottom it respectively.
5, hang connection---the position at annular lining module 7 corresponding lifting rack bottom lifting bolts 5 is made hole for hoist respectively; By non junction fake lockset 6 (WJT19 type standard component), will lift rack through lifting bolt 5 and hole for hoist and hang with annular lining module and be connected.
6, lifting is in place---eight main lifting wire rope 8 (referring to Fig. 2) are penetrated the lifting hole(eyelet) of each hanger on the lifting rack respectively; And concentrated being hooked on the loop wheel machine suspension hook 9 that is positioned at top, lifting rack center, the angle with horizontal plane behind each wire rope hook equals to lift by crane the angle; Handle loop wheel machine,, hang that to deliver to the installation site in place through the lifting rack annular lining module of slinging.
7, tired step by step stitch welding connects---and as shown in Figure 8; From bottommost, after treating to be superimposed upon higher level's annular lining module on subordinate's annular lining module, neighbouring annular lining module is interconnected the seam crossing full weld; Tired step by step folded, until forming in the complete steel lining.
The concrete parameter of present embodiment lifting rack does
| Rack weight | 32.12t |
| The rack height | 2.5m |
| Rack inside circumference diameter | 41.931m |
| Rack outer circumference diameter | 46.881m |
| The rack suspension centre number that winds up | 8 |
| Rack lower edge suspension centre number | 48 |
After adopting the method for present embodiment: through modular construction; Changed the construction technology that the lifting of construction piecemeal is installed in the original steel lining; Reduce the time of construction on the construction critical path in the steel lining, simplified fitting operation, reduced the measurement difficulty in the installation process; Reduce the security risk in the construction, improved synthetic operation efficient.Except that present embodiment, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (5)
1. modular construction method in the nuclear power station steel lining may further comprise the steps:
Step 1, preformed liner module---the multi-stage annular lining module with being divided into predetermined altitude in the steel lining of integral body for jar shape makes lining modules at different levels in advance;
Step 2, manufacturing lifting rack---the node spheroid that will have corresponding connection screw is by inside and outside two circles, two-layer spaced apart up and down; And externally threaded horizontal, vertical and the longitudiual truss bar is fixedly connected by the termination band respectively between adjacent, the neighbouring and inside and outside two adjacent node spheroids in each left and right sides, constitute three-dimensional circular lifting rack;
Step 3, the Heave Here being set---the individual node spheroid of the 4n that selects to be uniformly distributed along the circumference at the upper strata inner ring of lifting rack (n be 1,2... natural number) is as the Heave Here; Welding has the hanger of lifting hole(eyelet) respectively, and the line of centres of said lifting hole(eyelet) and corresponding node spheroid and horizontal plane form 30-60 ° lifting angle;
Step 4, sling point being set---8n node spheroid selecting circumference uniform distribution at least in the lower floor outer ring of lifting rack be as sling point, respectively at the connection screw screw-in lifting bolt of its bottom;
Step 5, hang connection---make hole for hoist respectively in lifting bolt position, the corresponding lifting of annular lining module rack bottom, will lift rack by non junction fake lockset through lifting bolt and hole for hoist and hang with annular lining module and be connected;
Step 6, lifting are in place---and 4n root master is lifted wire rope penetrate lifting each lifting hole(eyelet) on the rack respectively, and concentrate and be hooked on the loop wheel machine suspension hook that is positioned at top, lifting rack center, the angle with horizontal plane behind each wire rope hook equals to lift by crane the angle; Handle loop wheel machine,, hang that to deliver to the installation site in place through the lifting rack annular lining module of slinging;
Step 7, tired stitch welding connects step by step---and after treating to be superimposed upon higher level's annular lining module on subordinate's annular lining module, neighbouring annular lining module is interconnected the seam crossing full weld, until forming in the complete steel lining.
2. modular construction method in the nuclear power station steel lining according to claim 1 is characterized in that: in the step 2, also connect through oblique truss rod between inside and outside two circles of lifting rack and the bilevel diagonal angle node spheroid, form the herringbone reinforcement.
3. modular construction method in the nuclear power station steel lining according to claim 2 is characterized in that: in the step 2, the lifting rack should equal the external diameter of annular lining module through the pitch diameter of outer ring node ball centre.
4. modular construction method in the nuclear power station steel lining according to claim 3 is characterized in that: in the step 3, the line of centres of said lifting hole(eyelet) and corresponding node spheroid and horizontal plane form 45 ° lifting angle.
5. modular construction method in the nuclear power station steel lining according to claim 4 is characterized in that: in the step 4, the 4n in the said sling point corresponding with the position, Heave Here.
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| CN2011100058901A CN102071807B (en) | 2011-01-12 | 2011-01-12 | Nuclear power station steel lining modularized construction method |
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| CN2011100058901A CN102071807B (en) | 2011-01-12 | 2011-01-12 | Nuclear power station steel lining modularized construction method |
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| CN102071807B true CN102071807B (en) | 2012-01-25 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501019B (en) * | 2011-11-09 | 2013-07-31 | 中国核工业华兴建设有限公司 | Method for manufacturing first layer of steel lining dome of nuclear power station |
| CN102605951B (en) * | 2012-02-28 | 2013-02-13 | 中核能源科技有限公司 | Construction method for steel plate concrete wall of primary loop cabin of high temperature gas cooled reactor |
| 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 |
| CN104047432B (en) * | 2014-06-13 | 2016-08-17 | 长江勘测规划设计研究有限责任公司 | A kind of underground nuclear power station reactor cavern containment dome installation method |
| CN105672663A (en) * | 2014-11-21 | 2016-06-15 | 中国核工业第五建设有限公司 | Integral installation technology of large module in auxiliary workshop area for reactor-type nuclear power station |
| CN105133881B (en) * | 2015-09-10 | 2017-07-07 | 中核能源科技有限公司 | HTGR Nuclear Power Plant containment bracket section wall body module method of construction |
| CN107215779B (en) * | 2017-07-13 | 2018-09-07 | 中联重科股份有限公司 | Assembled architecture component hoisting method, device and system |
| CN110304543A (en) * | 2019-07-16 | 2019-10-08 | 山鹰国际控股股份公司 | A kind of dry rack safety device |
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| DD208837A1 (en) * | 1982-06-17 | 1984-04-11 | Metalleichtbaukombinat Werk In | ASSEMBLY METHOD FOR PRODUCING HIGH-TREATED WAECES |
| JP2010181227A (en) * | 2009-02-04 | 2010-08-19 | Mitsubishi Heavy Ind Ltd | Wall structure of nuclear reactor containment vessel and method of constructing the same |
| 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 |
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2011
- 2011-01-12 CN CN2011100058901A patent/CN102071807B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD208837A1 (en) * | 1982-06-17 | 1984-04-11 | Metalleichtbaukombinat Werk In | ASSEMBLY METHOD FOR PRODUCING HIGH-TREATED WAECES |
| JP2010181227A (en) * | 2009-02-04 | 2010-08-19 | Mitsubishi Heavy Ind Ltd | Wall structure of nuclear reactor containment vessel and method of constructing the same |
| 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 |
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