CN102172781B - High-precision plane field processing device and field processing method for top flanges for nuclear reactors - Google Patents
High-precision plane field processing device and field processing method for top flanges for nuclear reactors Download PDFInfo
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- CN102172781B CN102172781B CN 201110042607 CN201110042607A CN102172781B CN 102172781 B CN102172781 B CN 102172781B CN 201110042607 CN201110042607 CN 201110042607 CN 201110042607 A CN201110042607 A CN 201110042607A CN 102172781 B CN102172781 B CN 102172781B
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Abstract
The invention relates to a high-precision plane field processing device and a field processing method for top flanges for nuclear reactors. At present, no related device and method are provided. A milling machine provided by the invention comprises a power head, a rectangular frame, a drag plate and at least three high-precision adjustable plugs, wherein the power head contains a Z-direction movement mechanism, a tool spindle and a milling drive motor; the rectangular frame is provided with two X-direction guide rails and a X-direction screw rod, the drag plate is arranged on the X-direction guide rails, and a nut matched with the X-direction screw rod is fixed on the drag plate, thus an X-direction movement mechanism is formed; the drag plate is provided with a Y-direction sliding table, the moving of the Y-direction sliding table is controlled by the screw rod and a nut mechanism, thus a Y-direction movement mechanism is formed; and the power head is fixed on the Y-direction sliding table, and the rectangular frame is fixed on the high-precision adjustable plugs. The invention also relates to a corresponding field processing method. The device and method disclosed by the invention have the advantages of reasonable structure and scientific design and are suitable to be used for processing the top flanges of CA04 modules of an AP1000 nuclear power station.
Description
Technical field
The present invention relates to a kind of nuclear reactor on-the-spot process unit of top Flange Plane high accuracy and on-the-spot processing method.
Background technology
AP1000 nuclear power heap type is the state-of-the-art generation Ⅲ nuclear power in the world by the design of U.S. WEC company.AP1000 a large amount of employing modularization building technologies under construction.Whole power station is divided into 4 kinds of module types, and wherein construction module is 122,154 of pipeline modules, 55 of plant equipment modules, 11 of electrical equipment module.But the modularization building technology makes the completion time of project of AP1000 foreshorten to 60 months.
But some on-the-spot processing is essential, as the bracing or strutting arrangement of reactor critical component pressure vessel---and CA04 module top flange.This flange diameter reaches 6.6 meters, is positioned at containment top high more than 9 meters, and its plane machining flatness requires to be no more than 0.127mm for error, if carry out in advance Milling Process in the workshop, can produce distortion after lifting, welding, flatness is overproof, must not reach designing requirement.Therefore the last finish-milling of CA04 module top Flange Plane is cut operation and can only after lifting, welding are complete, be carried out at the construction field (site).
Three nuclear power projects are first reactor projects of AP1000 heap type, and CA04 module top Flange Plane difficulty of processing is large, and risk is high, and the job site is narrow, environment is narrow and small, and can be for utilizing and with reference to template without any ready-made equipment, data.Three nuclear power whole world bid processes, a plurality of companies such as Korea S, the U.S., Singapore successively beat a retreat in the face of difficulties.This technical barrier is not as breaking through, and whole Construction of Nuclear Electricity engineering will have to stagnate.
Summary of the invention
The technical problem to be solved in the present invention is how to fill up the above-mentioned blank of prior art, and a kind of nuclear reactor on-the-spot process unit of top Flange Plane high accuracy and on-the-spot processing method are provided.
For solving the problems of the technologies described above, Flange Plane high accuracy on-the-spot process unit in this nuclear reactor top comprises unit head, this unit head contains Z-direction motion, cutter spindle and milling drive motors, it is characterized in that: it also comprises rectangular, planker and at least three adjustable chocks of high accuracy, this rectangular is provided with two X-direction guide rails and X-direction leading screw, described planker is arranged on the X-direction guide rail, and the X-direction screw that coordinates with the X-direction leading screw is fixed on planker, forms the X motion; Described planker is provided with the Y-direction slide unit, and this Y-direction slide unit moves by leading screw, screw mechanism controls, forms the Y motion, and described unit head is fixed on the Y-direction slide unit, and described rectangular is pressed on the adjustable chock of high accuracy.
Traditional design is that workpiece is fixed on lathe, by continuous movement, adjustment workpiece, completes Milling Process; Anti-its road of the present invention and going is fixed on lathe on parallel flange position, nuclear reactor top, and the unit head of mobile machine tool is completed Milling Process.The adjustable chock of the high accuracy of setting up can accurately be adjusted to quite high level with the on-the-spot process unit of nuclear reactor of the present invention top Flange Plane high accuracy, guarantees that Milling Process reaches designing requirement.
As optimization, be fixed with Y-direction guide rail and Y-direction screw on described planker, described Y-direction slide unit is arranged on the Y-direction guide rail, which is provided with a rotating Y-direction screw mandrel, and this Y-direction screw mandrel passes the Y-direction screw.So design, the Y-direction screw mandrel moves in company with the Y-direction slide unit, and volume is compacter, and structure is more stable.
As optimization, described X-direction leading screw one end is provided with adjusting handle; Its other end is provided with travel driving motor, and this travel driving motor drives the X-direction leading screw by reducing gear, and described Y-direction leading screw outer end is provided with adjusting handle.So design, easy to operate.
As optimization, the adjustable chock of described high accuracy comprises pedestal, adjusting screw and slide block, wherein pedestal is provided with screwed hole, this screwed hole coordinates with the adjusting screw external screw thread, and the adjusting screw outer end is provided with the card division, is provided with the neck annular groove between card division and external screw thread, described slide block is provided with U-lag, the neck annular groove snaps in U-lag, and slide block is pressed on pedestal, and both contact-making surface is domatic.So design, simple in structure, easy to adjust, by fine setting, can reach very high flatness.
As optimization, it also comprises generous, is furnished with four generous interim stand-offs for this generous, and its four jiaos respectively cut a right angled triangle, and after excision, its catercorner length equals the distance between the nuclear reactor opposed inner walls; Are furnished with a plurality of rectangular interim stand-offs for described rectangular.So design is convenient to install.
As optimization, it also comprises electric cabinet, is provided with the PLC programme control circut in this electric cabinet, can manually automatic change between the crawl state, and the directions X speed of travel is adjusted.So design, control operation is convenient.
As optimization, also be provided with spindle squaring device on described unit head, so as to adjusting the perpendicularity of cutter spindle and surface of the work.So design, more accurate.
The invention still further relates to the on-the-spot processing method of AP1000 Nuclear Power Station reactor CA04 module top flange, comprise the steps:
1., the on-the-spot process unit of nuclear reactor of the present invention top Flange Plane high accuracy is transported to the scene;
2., on the relevant position of AP1000 Nuclear Power Station reactor CA04 module inwall four generous interim stand-offs of welding, the position is corresponding with generous four jiaos, welds above it rectangular interim stand-off on the relevant position;
3., install the adjustable chock of high accuracy additional on generous interim stand-off and rectangular interim stand-off, lift the on-the-spot process unit of this nuclear reactor top Flange Plane high accuracy, make its rectangular to be pressed on the adjustable chock of described high accuracy, and near a Flange Plane to be processed of AP1000 Nuclear Power Station reactor CA04 module top flange;
4., with high-precision laser horizontal checkout instrument, detect once every a segment distance (as 200mm) on two X-direction guide rails, and according to detection architecture, repeatedly regulate the adjustable chock of described high accuracy, until the on-the-spot process unit of this nuclear reactor top Flange Plane high accuracy transfers to the height level;
5., with between generous and generous interim stand-off, between rectangular interim stand-off and the adjustable chock of high accuracy, between the adjustable chock of high accuracy and rectangular, fix with fastening bolt respectively;
6., switch on power, install cutter additional, regulate spindle squaring device, make cutter spindle perpendicular to Flange Plane to be processed, start the on-the-spot process unit of this nuclear reactor top Flange Plane high accuracy, can begin milling plate to be processed;
7., process a Flange Plane to be processed after, be offset to the next position, repeat the aforementioned the 3.～6. step operation, until with all Flange Plane millings to be processed to design standard;
8., at last, the on-the-spot process unit of nuclear reactor top Flange Plane high accuracy is hung out nuclear reactor, and remove generous interim stand-off and rectangular interim stand-off.
Through experiment confirm, use the inventive method, the milling plane degree error of using process unit scene, Flange Plane high accuracy scene, nuclear reactor of the present invention top to process is no more than 0.10mm, can meet design requirement fully.
Rational in infrastructure, design science that the present invention has advantages of can be carried out the work such as on-the-spot milling, boring on various main equipments, be particularly suitable for comprising for processing the various used in nuclear power station nuclear reactors tops flange of AP1000 nuclear power station.
Description of drawings
Below in conjunction with accompanying drawing, this nuclear reactor on-the-spot process unit of top Flange Plane high accuracy and on-the-spot processing method are described further:
Fig. 1 is the structural representation (not containing the adjustable chock of high accuracy) of the on-the-spot process unit of this nuclear reactor top Flange Plane high accuracy;
Fig. 2 is the structural representation of the adjustable chock of high accuracy;
Fig. 3 is the structural representation of slide block disengaged position in the adjustable chock of high accuracy shown in Figure 2;
Fig. 4 is the working state schematic representation of site of deployment processing nuclear reactor top flange.
in figure: 1 is unit head, 2 is cutter spindle, 3 are the milling drive motors, 4 is rectangular, 5 is planker, 6 is the adjustable chock of high accuracy, 7 is the X-direction guide rail, 8 is the X-direction leading screw, 9 is the Y-direction slide unit, 10 is the Y-direction screw mandrel, 11 is adjusting handle, 12 is travel driving motor, 13 is pedestal, 14 is slide block, 15 is adjusting screw, 16 is the card division, 17 is the neck annular groove, 18 is generous, 19 is electric cabinet, 20 is generous interim stand-off, 21 is rectangular interim stand-off, 22 is nuclear reactor safety shell inner layer steel plate, 23 is the Flange Plane to be processed on the flange of nuclear reactor top.
The specific embodiment
Embodiment one: as shown in Fig. 1-4, Flange Plane high accuracy on-the-spot process unit in this nuclear reactor top comprises unit head 1, this unit head 1 contains Z-direction motion, cutter spindle 2 and milling drive motors 3, it is characterized in that: it also comprises rectangular 4, planker 5 and at least three adjustable chocks 6 of high accuracy, this rectangular 4 is provided with two X-direction guide rails 7 and X-direction leading screw 8, described planker 5 is arranged on X-direction guide rail 7, the X-direction screw that coordinates with X-direction leading screw 8 is fixed on planker, forms the X motion.Described planker 5 is provided with Y-direction slide unit 9, and this Y-direction slide unit 9 moves by leading screw, screw mechanism controls, forms the Y motion, and described unit head 1 is fixed on the Y-direction slide unit 9, and described rectangular 4 is fixed on the adjustable chock 6 of high accuracy.
Be fixed with Y-direction guide rail and Y-direction screw on described planker 5, described Y-direction slide unit 9 is arranged on the Y-direction guide rail, which is provided with a rotating Y-direction screw mandrel 10, and this Y-direction screw mandrel 10 passes the Y-direction screw.
Described X-direction leading screw 8 one ends are provided with adjusting handle 11; Its other end is provided with travel driving motor 12, and this travel driving motor 12 drives X-direction leading screw 8 by reducing gear, and described Y-direction leading screw 10 outer ends also are provided with adjusting handle 11.
The adjustable chock of described high accuracy comprises pedestal 13, slide block 14 and adjusting screw 15, wherein pedestal 13 is provided with screwed hole, this screwed hole coordinates with adjusting screw 15 external screw threads, adjusting screw 15 outer ends are provided with card division 16, be provided with neck annular groove 17 between card division 16 and external screw thread, described slide block 14 is provided with U-lag, and neck annular groove 17 snaps in U-lag, slide block 14 is pressed on pedestal 13, and both contact-making surface is domatic.
The present invention also comprises generous 18 and electric cabinet 19, wherein is furnished with four generous interim stand-offs 20 for generous 18, and its four jiaos respectively cut a right angled triangle, and after excision, its catercorner length equals the distance between the nuclear reactor opposed inner walls; Are furnished with eight rectangular interim stand-offs 21 for described rectangular 4.Be provided with the PLC programme control circut in electric cabinet 18, can manually automatic change between the crawl state.
Also be provided with spindle squaring device on described unit head 1, so as to adjusting the perpendicularity of cutter spindle 2 and surface of the work, slightly.
Flange Plane high accuracy on-the-spot process unit in application of aforementioned nuclear reactor top carries out the scene to nuclear reactor top flange and adds man-hour, carries out according to following step:
1., the on-the-spot process unit of nuclear reactor of the present invention top Flange Plane high accuracy is transported to the scene;
2., on the relevant position of AP1000 Nuclear Power Station reactor CA04 module inwall four generous interim stand-offs 20 of welding, the position is corresponding with generous 18 4 jiaos, welds above it rectangular interim stand-off 21 on the relevant position;
3., install the adjustable chock 6 of high accuracy additional on generous interim stand-off 20 and rectangular interim stand-off 21, lift the on-the-spot process unit of this nuclear reactor top Flange Plane high accuracy, make its rectangular 4 to be pressed on the adjustable chock 6 of described high accuracy, and near a Flange Plane 23 to be processed of AP1000 Nuclear Power Station reactor CA04 module top flange;
4., with high-precision laser horizontal checkout instrument, detect once every a segment distance on two X-direction guide rails 7, and according to detection architecture, repeatedly regulate the adjustable chock of described high accuracy, until the on-the-spot process unit of this nuclear reactor top Flange Plane high accuracy is transferred to the height level;
5., with between generous 18 and generous interim stand-off 20, between rectangular interim stand-off 21 and the adjustable chock 6 of high accuracy, between high accuracy is adjustable chock 6 and rectangular 4, fix with fastening bolt respectively;
6., switch on power, install cutter additional, regulate spindle squaring device, make cutter spindle 2 perpendicular to Flange Plane 23 to be processed, start the on-the-spot process unit of this nuclear reactor top Flange Plane high accuracy, can begin milling Flange Plane 23 to be processed;
7., process a Flange Plane to be processed after, be offset to the next position, repeat the aforementioned the 3.～6. step operation, until with all Flange Plane millings to be processed to design standard;
8., at last, the on-the-spot process unit of nuclear reactor top Flange Plane high accuracy is hung out nuclear reactor, and remove generous interim stand-off 20 and rectangular interim stand-off 21.
If necessary, can also install the adjustable chock 6 of high accuracy additional on generous 18, provide more branched support for rectangular 4.
Claims (8)
1. on-the-spot process unit of nuclear reactor top Flange Plane high accuracy, comprise unit head, this unit head contains Z-direction motion, cutter spindle and milling drive motors, it is characterized in that: Flange Plane high accuracy on-the-spot process unit in this nuclear reactor top also comprises rectangular, planker and at least three adjustable chocks of high accuracy, this rectangular is provided with two X-direction guide rails and X-direction leading screw, described planker is arranged on the X-direction guide rail, the X-direction screw that coordinates with the X-direction leading screw is fixed on planker, forms the X motion; Described planker is provided with the Y-direction slide unit, and this Y-direction slide unit moves by leading screw, screw mechanism controls, forms the Y motion, and described unit head is fixed on the Y-direction slide unit, and described rectangular is fixed on the adjustable chock of high accuracy.
2. the on-the-spot process unit of nuclear reactor as claimed in claim 1 top Flange Plane high accuracy, it is characterized in that: be fixed with Y-direction guide rail and Y-direction screw on described planker, described Y-direction slide unit is arranged on the Y-direction guide rail, the Y-direction slide unit is provided with a rotating Y-direction screw mandrel, and this Y-direction screw mandrel passes the Y-direction screw.
3. the on-the-spot process unit of nuclear reactor as claimed in claim 2 top Flange Plane high accuracy, it is characterized in that: described X-direction leading screw one end is provided with adjusting handle; The X-direction leading screw other end is provided with travel driving motor, and this travel driving motor drives the X-direction leading screw by reducing gear, and described Y-direction leading screw outer end is provided with adjusting handle.
4. as claim 1 or the 2 or 3 on-the-spot process units of described nuclear reactor top Flange Plane high accuracy, it is characterized in that: described high accuracy adjustable gag comprises pedestal, adjusting screw and slide block, wherein pedestal is provided with screwed hole, this screwed hole coordinates with the adjusting screw external screw thread, and the adjusting screw outer end is provided with the card division, is provided with the neck annular groove between card division and external screw thread, described slide block is provided with U-lag, the neck annular groove snaps in U-lag, and slide block is pressed on pedestal, and both contact-making surface is domatic.
5. the on-the-spot process unit of nuclear reactor as claimed in claim 4 top Flange Plane high accuracy, it is characterized in that: it also comprises generous, are furnished with four generous interim stand-offs for this generous, generous four jiaos respectively cut a right angled triangle, and rear generous the catercorner length of excision equals the distance between the nuclear reactor opposed inner walls; Are furnished with a plurality of rectangular interim stand-offs for described rectangular.
6. the on-the-spot process unit of nuclear reactor as claimed in claim 5 top Flange Plane high accuracy, it is characterized in that: it also comprises electric cabinet, is provided with the PLC programme control circut in this electric cabinet.
7. the on-the-spot process unit of nuclear reactor top Flange Plane high accuracy as claimed in claim 6, is characterized in that: also be provided with spindle squaring device on described unit head, so as to adjusting the perpendicularity of cutter spindle and surface of the work.
8. 1. the on-the-spot processing method of AP1000 Nuclear Power Station reactor CA04 module top flange, comprise the steps:, the on-the-spot process unit of nuclear reactor claimed in claim 7 top Flange Plane high accuracy be transported to the scene;
2., on the relevant position of AP1000 Nuclear Power Station reactor CA04 module inwall four generous interim stand-offs of welding, the position is corresponding with generous four jiaos, welds above it rectangular interim stand-off on the relevant position;
3., install the adjustable chock of high accuracy additional on generous interim stand-off and rectangular interim stand-off, lift the on-the-spot process unit of this nuclear reactor top Flange Plane high accuracy, make its rectangular to be pressed on the adjustable chock of described high accuracy, and near a Flange Plane to be processed of AP1000 Nuclear Power Station reactor CA04 module top flange;
4., with high-precision laser horizontal checkout instrument, detect once every a segment distance on two X-direction guide rails, and according to detection architecture, repeatedly regulate the adjustable chock of described high accuracy, until the on-the-spot process unit of this nuclear reactor top Flange Plane high accuracy is transferred to the height level;
5., with between generous and generous interim stand-off, between rectangular interim stand-off and the adjustable chock of high accuracy, between the adjustable chock of high accuracy and rectangular, fix with fastening bolt respectively;
6., switch on power, install cutter additional, regulate spindle squaring device, make cutter spindle perpendicular to Flange Plane to be processed, start the on-the-spot process unit of this nuclear reactor top Flange Plane high accuracy, can begin milling Flange Plane to be processed;
7., process a Flange Plane to be processed after, move to the next position, repeat the aforementioned the 3.～6. step operation, until with all Flange Plane millings to be processed to design standard;
8., at last, the on-the-spot process unit of nuclear reactor top Flange Plane high accuracy is hung out nuclear reactor, and remove generous interim stand-off and rectangular interim stand-off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110042607 CN102172781B (en) | 2011-01-31 | 2011-01-31 | High-precision plane field processing device and field processing method for top flanges for nuclear reactors |
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| CN 201110042607 CN102172781B (en) | 2011-01-31 | 2011-01-31 | High-precision plane field processing device and field processing method for top flanges for nuclear reactors |
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| CN102172781A CN102172781A (en) | 2011-09-07 |
| CN102172781B true CN102172781B (en) | 2013-06-05 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103464814A (en) * | 2012-06-07 | 2013-12-25 | 常州阖闾换热器有限公司 | Method for processing waist shaped flanges |
| CN104354047A (en) * | 2014-05-06 | 2015-02-18 | 兰州兰石重型装备股份有限公司 | Machining device for flange sealing surface |
| KR101543305B1 (en) * | 2014-10-22 | 2015-08-25 | 김성기 | Horizontal cutting machine |
| CN104827313B (en) * | 2014-12-31 | 2017-02-22 | 武汉国威重型机床股份有限公司 | Processing platform and method for support block in reactor pressure vessel body |
| CN109894658A (en) * | 2019-04-28 | 2019-06-18 | 佛山职业技术学院 | A kind of live milling equipment of guide-track groove |
| CN110385659B (en) * | 2019-07-23 | 2021-04-13 | 赖海东 | Fixed clamping device for machining metal workpieces |
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Address after: 317100 Haiyou Town, Sanmen County, Taizhou City, Zhejiang Province (Shatianyang Development Zone) Co-patentee after: China Nuclear Industry Fifth Construction Co., Ltd. Patentee after: Zhejiang Julong Automation Equipment Co., Ltd. Address before: 317100 Haiyou Town, Sanmen County, Taizhou City, Zhejiang Province (Shatianyang Development Zone) Co-patentee before: China Nuclear Industry Fifth Construction Co., Ltd. Patentee before: Jiangsu Great Dragon Automation Equipment Co., Ltd. |