CN1647888A - Method for controlling process evenness of steam generator pipe support plate in nuclear powder station - Google Patents
Method for controlling process evenness of steam generator pipe support plate in nuclear powder station Download PDFInfo
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- CN1647888A CN1647888A CN 200410067490 CN200410067490A CN1647888A CN 1647888 A CN1647888 A CN 1647888A CN 200410067490 CN200410067490 CN 200410067490 CN 200410067490 A CN200410067490 A CN 200410067490A CN 1647888 A CN1647888 A CN 1647888A
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Abstract
The pipe support plate machining evenness controlling method features the 'zonal homogeneous symmetrical rigidity reducing method'. The machining process includes the steps of: dividing the support plate into several checker zones; numbering the checker zones; drilling holes in homogeneous rigidity reducing order of first the zones in 1/2 radius positions and near zones, then central zone and final outmost zones; drilling holes in symmetrical rigidity reducing order of first one upper zone, then one lower zone, then one left zone and final one right zone; chamfering the drilled holes and broaching in the same order as that in drilling holes. The present invention can results in pipe support plate machining evenness within 6 mm.
Description
Technical field
The present invention relates to the method for a kind of thin plate processing nonflatness control, particularly a kind of method of process evenness of steam generator pipe support plate in nuclear powder station control belongs to the manufacturing technology field.
Background technology
Pressurized-water reactor nuclear power plant is the determined heap type of China's development nuclear power station, and steam generator is one of its capital equipment.Steam generator with mountain range Australia nuclear power station is an example, there are 4500 left and right sides U-shaped pipes the inside, 19 millimeters of diameters, and heat exchange is used, lean on the tube supports plate of 9 in 1 cover and the relative position that flow distribution baffle limits these pipes, and guarantee that medium flows in the pipe outside well.About 3 meters of every gripper shoe diameters, thickness 30 person of outstanding talent's rice, material is stainless.9000 4 leaf plum blossom holes are arranged above approximately, as shown in Figure 1 and Figure 2, must make thousands of pipes all smoothly by the corresponding plum blossom hole of all gripper shoes, the manufacture difficulty of visible tube supports plate is extraordinary.The processing nonflatness be controlled to be one of its difficulty, it must be controlled at below the 15mm, and the gripper shoe blank steel plate that French Crusoe factory is provided has greater than 12mm, the gripper shoe nonflatness be described and be not easy and control.Pressurized water reactor nuclear power station steam generator tube supports board diameter is 100 with the ratio of the thickness of plate, and its ratio belongs to the thin plate in the Elasticity greater than 20.Through processing, remove 4 leaf plum blossom holes about 9000 after, gripper shoe becomes large-diameter circular mesh thin plate, as individual sieve.Consider that from the angle of Elasticity process can be regarded the problem on deformation under the concentrated force effects such as being subjected to drill bit or broaching tool on the elastic foundation as.Considering from the angle of vibration mechanics, is the mechanical oscillation of an elastic sheet under the very big exciting force effect.And be the change rigidity plate that has a plurality of not connected domains.Consider from the theory of metal cutting angle, thin plate is subjected to comprehensive functions such as cutting force, heat in metal cutting, residual stress, anchor clamps thrust, backing plate strain restoring force, workpiece and cutter in the process, and the thin plate distortion is considered from three aspects: strain, bending deformation and mechanical oscillation.In sum, the difficult control of process evenness of steam generator pipe support plate in nuclear powder station.
Summary of the invention
The objective of the invention is provides a kind of method of process evenness of steam generator pipe support plate in nuclear powder station control in order to be controlled at the nonflatness that produces in the processing of processing nuclear power station steam generator tube supports plate.
Technical scheme of the present invention is: a kind of method of process evenness of steam generator pipe support plate in nuclear powder station control is characterized in that " subregion subtracts stiffness method symmetrically, and it comprises the following steps: in its employing
1, using plane coordinates system, is origin of coordinate with the gripper shoe center of circle, is divided into a plurality of grid zones along X, Y-axis symmetry, and each district accounts for the 1/50-1/100 of gripper shoe area;
2, give above-mentioned grid zone numbering, place, the center of circle be No. 1 the district belong to 1 the ring, adjacent with 1 ring encircles for the 2-9 district belongs to 2, the 10-25 district adjacent with 2 rings belongs to 3 rings, and the 26-49 district adjacent with 3 rings belongs to 4 rings, and the 50-69 district adjacent with 4 rings belongs to 5 rings, continue numbering according to the garden of support plate size, namely from center outwards order be 1,2, the 3...... ring, district's number that every ring comprises is 1,3,5,7...... squares-1,9,25,49......, outmost ring is the dead zone;
More than two steps be the method for subregion;
3, boring order a): at first processing be on the radius adapter ring each the district, be then with its adjacent ring on each the district, again machining center No. 1 the district, add at last outermost ring Shang Ge district, this step is evenly to subtract rigidity;
4, boring order b): in each ring by the processing of symmetric position area code, i.e. a top district, below a district, district, the left side, district, the right side, this is that symmetry subtracts rigidity;
5, boring chamfering: carry out chamfering after the gripper shoe boring, remove orifice flanging, this step is the impact of removing forming residual stress and plastic deformation;
6, broaching processing, with reference to above-mentioned steps, and same the realization " subregion subtracts stiffness method symmetrically: 1) subregion, 2) numbering; 3) Drilling operation: the ring in the middle of the radius of slave plate begins on the district at each the processing-center, district on Drilling operation-adjacent ring-outmost ring each and distinguishes and process
4) ring Shang Ge district is processed by the symmetry order: a top district, a following district, one district, the left side, one district, the right side; 5) boring back chamfering, the hair that falls.
The invention has the beneficial effects as follows, can reliably control nuclear power station steam generator tube supports board plane nonflatness, can be controlled at below the 6mm actual accomplishing≤4mm.
Description of drawings
Fig. 1 is nuclear power station steam generator pipe support plate figure;
Fig. 2 is four leaf plum blossom hole patterns;
Fig. 3 is a nuclear power station steam generator tube supports plate block plan.
The specific embodiment
A kind of method of process evenness of steam generator pipe support plate in nuclear powder station control, it adopts " subregion subtracts stiffness method symmetrically ", and existing steam generator pipe support plate processing nonflatness with mountain range Australia nuclear power station is controlled to be embodiment, and the step of method is:
1, with plane coordinates system, is origin of coordinate, is divided into a plurality of grid zones along X, Y-axis symmetry with the gripper shoe center of circle, each district accounts for the 1/50-1/100 of gripper shoe area, as shown in Figure 3, is divided into 81 grids, plectane is actual to be 69 districts, go to the empty grid zone in 4 corners.
2, give above-mentioned grid zone numbering, place, the center of circle be that No. 1 district belongs to 1 ring, adjacent with 1 ring for 2-9 district belongs to 2 rings, the 10-25 district adjacent with 2 rings belongs to 3 rings, the 26-49 district adjacent with 3 rings belongs to 4 and encircles, and 4 encircles adjacent 50-69 district and belongs to 5 and encircle.More than two steps be the method for subregion;
3, the boring order a): 3 Huan Ge districts, then 2,4 Huan Ge districts in the middle of at first processing; Again process the district No. 1; Last 5 Huan Ge districts, this step is evenly to subtract rigidity.
4, boring order b): in each ring by the processing of symmetric position area code, i.e. a top district, below a district, district, the left side, district, the right side, for example 3 rings are at first processed 10 districts, then 18 districts, 14 districts, last 22 districts, this is that symmetry subtracts rigidity.
5, boring chamfering: carry out chamfering after the gripper shoe boring, remove orifice flanging, this step is the impact of removing forming residual stress and plastic deformation;
Illustrate: 1) can directly the order numbering of holing be write on the plank, be No. 1 such as No. 10 present districts, and No. 18 the district is No. 2, like this handled easily personnel processing.
2) to boring order b) when original supply of material blanket nonflatness is relatively good, also can respectively distinguishing continuously of top delegation process, be that 21 in the example, 22,23 processed continuously, the continuously processing of each district of following delegation then, in the example 13,14,15 processed continuously, the more continuously processing of each district of the left side one row, and 24 in the example, 25,10,11,12 processed continuously, be the continuously processing of each district of the right side one row at last, the 16-20 district processing in the example.
6, broaching processing, with reference to above-mentioned steps, the same realization " subregion subtracts stiffness method symmetrically: 1) subregion; the area of sub-district is the 1/50-1/100 of plate; 2) numbering; therefrom the mind-set outer rim is by ring numbering, 3) and boring processing: each the district's processing on a district-outmost ring at each the processing-center, district on processing-adjacent ring that begins to hole of the ring in the middle of the radius of slave plate, 4) ring Shang Ge district presses and symmetrically processes in proper order: a top district, a following district, one district, the left side, one district, the right side; 5) boring back chamfering, the hair of back of broaching.
Main theory basis of the present invention is Elasticity, mechanical vibration theory and theory of metal cutting." subregion subtracts stiffness method symmetrically " can apply in a flexible way in many occasions, and promptly " thin plate of symmetrical configuration remains the thin plate of symmetrical configuration after the processing.What machining was fallen is a large amount of identical junior units ".Use the present invention under so preceding topic, what provide here only is the special circumstances of the thin plectane of major diameter, and its last processing result belongs to the web plate that rigidity obviously weakens and be symmetrical configuration.Side's plate, rectangular slab or the like can.
Claims (1)
1, a kind of method of process evenness of steam generator pipe support plate in nuclear powder station control is characterized in that " subregion subtracts stiffness method symmetrically, and it comprises the following steps: in its employing
1) with plane coordinates system, be origin of coordinate with the gripper shoe center of circle, be divided into a plurality of grid zones along X, Y-axis symmetry, each district accounts for the 1/50-1/100 of gripper shoe area;
2) give above-mentioned grid zone numbering, place, the center of circle be No. 1 the district belong to 1 the ring, adjacent with 1 ring encircles for the 2-9 district belongs to 2, the 10-25 district adjacent with 2 rings belongs to 3 rings, and the 26-49 district adjacent with 3 rings belongs to 4 rings, and the 50-69 district adjacent with 4 rings belongs to 5 rings, continue numbering according to the garden of support plate size, be 1,2,3 in proper order outwards from center namely ... ring, district's number that every ring comprises is 1,3,5,7 ... squares-1,9,25,49 ..., outmost ring is the dead zone; More than two steps be the method for subregion;
3) boring order a): at first processing be on the radius adapter ring each the district, be then with its adjacent ring on each the district, again machining center No. 1 the district, add at last outermost ring Shang Ge district, this step is evenly to subtract rigidity;
4) boring order b): in each ring by the processing of symmetric position area code, i.e. a top district, below a district, district, the left side, district, the right side, this is that symmetry subtracts rigidity;
5) boring chamfering: carry out chamfering after the gripper shoe boring, remove orifice flanging, this step is the impact of removing forming residual stress and plastic deformation;
6) broaching processing, with reference to above-mentioned steps, the same realization " subregion subtracts stiffness method symmetrically: 1) subregion; 2) numbering; 3) Drilling operation: the ring in the middle of the radius of slave plate begins each the district's processing on the district at each the processing-center, district on Drilling operation-adjacent ring-outmost ring, 4) ring Shang Ge district is processed in proper order by symmetry: a top district, a following district, one district, the left side, one district, the right side; 5) chamfering, the hair that falls after the boring.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100674903A CN100366381C (en) | 2004-10-26 | 2004-10-26 | Method for controlling process evenness of steam generator pipe support plate in nuclear powder station |
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| CNB2004100674903A CN100366381C (en) | 2004-10-26 | 2004-10-26 | Method for controlling process evenness of steam generator pipe support plate in nuclear powder station |
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| CN1647888A true CN1647888A (en) | 2005-08-03 |
| CN100366381C CN100366381C (en) | 2008-02-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416417A (en) * | 2010-09-28 | 2012-04-18 | 苏州尚品科技有限公司 | Punching method for high-density stainless steel mesh plate |
| CN102500787A (en) * | 2011-12-20 | 2012-06-20 | 中国飞机强度研究所 | Machining method of symmetrical multi-hole working piece |
| CN102592692A (en) * | 2012-01-06 | 2012-07-18 | 中国核工业二三建设有限公司 | Method for installing steam generator in nuclear island of nuclear power plant |
| CN104785814A (en) * | 2014-01-16 | 2015-07-22 | 斗山重工业株式会社 | Drilling worktable for manufacturing tube support plates and method of manufacturing tube support plates using the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071615A (en) * | 1991-10-23 | 1993-05-05 | 吴志明 | The symmetry process technology |
| CH688306A5 (en) * | 1994-09-07 | 1997-07-31 | Eugen Haenggi | Method and apparatus for punching Loechernin a flat workpiece. |
| JP2000326159A (en) * | 1999-05-14 | 2000-11-28 | Bkt:Kk | Metal machining method |
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2004
- 2004-10-26 CN CNB2004100674903A patent/CN100366381C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416417A (en) * | 2010-09-28 | 2012-04-18 | 苏州尚品科技有限公司 | Punching method for high-density stainless steel mesh plate |
| CN102500787A (en) * | 2011-12-20 | 2012-06-20 | 中国飞机强度研究所 | Machining method of symmetrical multi-hole working piece |
| CN102500787B (en) * | 2011-12-20 | 2013-07-10 | 中国飞机强度研究所 | Machining method of symmetrical multi-hole working piece |
| CN102592692A (en) * | 2012-01-06 | 2012-07-18 | 中国核工业二三建设有限公司 | Method for installing steam generator in nuclear island of nuclear power plant |
| CN102592692B (en) * | 2012-01-06 | 2014-12-03 | 中国核工业二三建设有限公司 | Method for installing steam generator in nuclear island of nuclear power plant |
| CN104785814A (en) * | 2014-01-16 | 2015-07-22 | 斗山重工业株式会社 | Drilling worktable for manufacturing tube support plates and method of manufacturing tube support plates using the same |
| CN104785814B (en) * | 2014-01-16 | 2019-10-11 | 斗山重工业株式会社 | For processing the bore operation platform of tube support plate and utilizing its tube support plate manufacturing method |
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| CN100366381C (en) | 2008-02-06 |
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